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Adolescent cliques are cliques that develop amongst adolescents. In the social sciences, the word "clique" is used to describe a group of 2 to 12 (averaging 5 or 6) "persons who interact with each other more regularly and intensely than others in the same setting". Cliques are distinguished from "crowds" in that their members interact with one another (e.g. hang out together, go shopping, play basketball). Crowds, on the other hand, are defined based on reputation. Although the word 'clique' or 'cliquey' is often used in day-to-day conversation to describe relational aggression or snarky, gossipy behaviour of groups of socially dominant teenage girls this is not scientifically accurate. Interacting with cliques is part of normative social development regardless of gender, ethnicity, or popularity. Although cliques are most commonly studied during adolescence and middle childhood, they exist in all age groups.

Definition
As children enter adolescence, cultural, biological and cognitive changes cause variation in their daily lives. Adolescents spend far less time with their parents and begin participating in both structured and unstructured peer activities. Without the direct presence of their parents or other adults, their peer network begins to become the primary context for most socialization and activity. These social “cliques” fundamentally influence adolescent life and development. Perhaps because they are perceived as an external threat to parental authority, undesired changes in adolescent behaviour are often attributed to cliques. In these situations, cliques are described as “social grouping[s] of persons that exhibit a great deal of peer pressure on its members and is exclusive, based on superficial differences”. Researchers, however, question these assumptions: based on empiric data from both experiments and ethnographies they suggest that clique structure characterizes many friendship networks within any given school, not all of which negatively affect adolescents. A more neutral and scientific definition of clique is “a grouping of persons who interact with each other more regularly and intensely than others in the same setting.”

Although cliques can range from two to twelve people, cliques typically consist of five or six people who are homogeneous in age, gender, race, social status, and socioeconomic background. More subtle determinant of group membership, such as shared interests and values, take precedence as adolescents develop more sophisticated, abstract cognitive functions (more here), which allow them to categorize individuals in more subtle ways and better interpret social interactions. Consistent group identities thus allow individuals to cope with the anonymity and intimidation that often accompany the transition into large secondary schools.

Similar cliques may re-emerge in adulthood in specific contexts, characterized by large, undifferentiated, anonymous crowds. Overall, cliques are a transitory social phase. In general, cliques first form in early adolescence with strict gender segregation, but by middle adolescence, some mixed-gender activities within the peer crowds foster close, cross-sex friendships which begin to restructure the clique. During late adolescence, the organized clique structure typically dissolves into associated sets of couples, which then remain the primary social unit into and throughout adulthood.

Cliques are different from other types of peer groups often seen in the average school, which are often reputation-based groups such as jocks or nerds. The major difference is that these reputation-based groups do not necessarily interact with each other, whereas members of a clique do interact with one another and have frequent social interactions. For example, football players are considered jocks, but not all members of a football team always interact with each other.

Common misconceptions
Although the popular media portrays female cliques almost exclusively (see examples in movies, television, and young adult fiction), clique membership is almost equally prevalent in adolescent boys. Girls do, however, tend to form cliques earlier (11 years old as compared to 13 or 14 among boys), which may contribute to the greater popular salience of female cliques. Additionally, the activities central to most female cliques include gossip and emotional sharing; this behaviour visibly increases, revealing female cliques to the outside observer. Male cliques, on the other hand, tend to centre around activities that have occurred before the formation of the clique (common examples include basketball and video games), and thus may draw less attention to the appearance of male cliques. Male cliques may have also gone largely unnoticed because they often appear less exclusive toward the non-clique peer group members. This last difference may arise because males more frequently reported ambitions related to acceptance and status throughout their crowd, whereas females more often aspired to status and close bonds with only a few peers (i.e. a clique). Males were also more likely to consider actively exclusive behaviour unethical, as were younger adolescents. The stereotype of cruel, unwelcoming clique members is well supported in some cases, but other cliques are more open to drifters. Both attitudes appear in some cliques of both sexes and all social groups become more permeable with age. Similarly, although adolescents tend to associate with others of the same ethnicity and socioeconomic status, clique membership is equally common across ethnicity and economic background. The characteristics of the distinct cliques within each demographic group also vary equally, although members of cliques in one crowd or demographic group may not perceive all of the distinctions in others (see also crowds).

Forms of association
A number of recent studies confirm that regardless of gender, ethnicity, or socioeconomic status, adolescents tend to fall into one of three categories: group members, liaisons, and isolates.
 * 1) Group Member: The majority of group members’ social interactions occur within the same small group.  They comprise less than half of any given school population at a time, with a higher concentration among girls and younger grades.
 * 2) Liaisons: Liaisons associate with a few members of multiple cliques and are generally regarded positively by their peers.
 * 3) Isolates: Characterized by few, if any, close peer relationships, these individuals do not regularly interact with any clique members.  Isolated can be further classified by social agency:
 * 4) Volunteer status - these isolates deliberately avoid forming relationships.
 * 5) Forced status - peers actively exclude, mock, or victimize these isolates (see relational aggression and bullying).

Stability over time
Membership type is far more stable over time than membership in an individual clique: isolates generally remain socially disengaged, liaisons remain equally consistent, and “group members” frequently switch from one clique to another, but typically remain group members over time. The objective cliques themselves remain surprisingly stable as well. On average, cliques lose around one third of their members over a given school year, but new members with similar characteristics tend to replace the deserters, maintaining the general identity of the clique. Clique membership becomes more stable across time, as well as more permeable, less exclusive, and less hierarchical. Contrary to popular belief, individual friendships are far less stable across the school year. This is particularly true of high-status cliques and individuals, in which clique members must critically analyze their friendships and socialize only with their most popular peers or risk losing membership and status.

Types of cliques
Using the definition of a clique, we are able to draw distinctions between the many different types of cliques a person is able to be a member of. During adolescent years, students may obtain membership to a certain clique in order to ease the process of secondary school. Since adolescents emulating similar cultural standards are likely to become friends and these friends are likely to encourage these aspects of their attitudes, behaviours, and dress, the types of cliques commonly found in schools can vary significantly. Some of the more common types of cliques found include: jocks, sporty girls, cheerleaders, mean girls, foreigners, gamers, sluts, hipsters, hippies, troublemakers, peacemakers, class clowns, "cool kids", arty intellectuals, gangsters, wangsters, "ghetto kids", stoners/slackers, scenesters, punks, preps, skaters, goths, emos, skinheads, geeks/nerds, and drifters.

Middle School Cliques
Sociologists Patricia and Peter Adler claim that Middle School cliques can fall under four specific labels:


 * The Popular Clique - members of this clique are generally known to have the most friends in their school, and are viewed as having the most fun.
 * The Fringe Group - members of this clique follow in the shadow of members of the popular clique - they mimic the popular cliques' actions, structure and guidelines, but are not actually part of it.
 * The Friendship Circles - members of friendship circles tend to be groups of friends who share a common belief, interest, style, appearance, or hobby, or are looking for their own culture separate from the other cliques.
 * The Loners - members of this group seem to have very few friends, and prefer to work and be alone. Some may be envious of those who belong to a different clique.

High School Cliques
TLC (TV channel) mentions and describes some typical types of teen cliques observable in most high schools.


 * Geeks - a group of students described as being intellectual, obsessive or socially impaired. They usually don't have the fashion sense of other groups, and they usually prefer chess to hoops."Geeky" interest and hobbies usually include: fantasy movies and shows, role-playing games and technical hobbies and activities. Geeks are smart, but they sometimes have a hard time socially, as many teens view nerds as being more boring to be around than others.
 * Jocks - live for athletics; tend to be popular with many of their peers. They may be the male equivalent of "mean girls."
 * Thespians - the teens that are obsessed with Broadway musicals and more than like aspire to do theatre professionally. They typically have a very busy and complicated schedule, spending most of their time in rehearsal for the school show or working on their craft. They generally do well academically and have a good sense of responsibility. Their hobbies include learning all the songs and dances to all their favourite musicals, singing randomly at any given time, and obsessing over a new favourite Broadway show every week. They are usually very kind and sweet to those outside of their own clique, except for the occasional diva. They are also creative and very funny, but have an unique sense of humour which is only funny to those who understand musical theatre references; Their preferred subjects are in the Performing Arts - Drama, Singing, Dance, Acting, and Musical Theatre. They may also be involved in other performing arts activities, such as Choir or Dancing.
 * Skaters - skateboarders who came along and borrowed the long hair and slacker trappings of the surf scene, but they have always been more rebellious.
 * Outsiders - may be socially challenged and just don't fit in, or they may be independent and feel no need to join any one group exclusively. They may become the target of bullying.
 * Hipsters - make a big effort to assemble a wardrobe that seems effortless. Guys and girls alike go for tight jeans, flannel shirts, Buddy Holly glasses and vintage clothing. They follow the latest trends in fashion and like to be independent from the other cliques and often do what is "uncool" before it becomes "cool".
 * Scenesters - ever eager to fit in. They're dedicated followers of fashion, devoted to a particular band, club or style. They dress in tight, fashionable clothing, wear sunglasses and sport wild but styled hairdos (think striped, streaked or spiked). Social media platforms are totally essential to them. Scenesters sometimes get labeled posers or wannabes.
 * Preps - a subgenre of the popular clique. Preps tend to be good at being social, having fun and they usually come from an upper middle class or upper class family. Sometimes they overlap with jocks, especially when it comes to sports. In most high schools, Preps are the ones that are most commonly chosen to have important positions for school events such as Class Officers, Home Coming King/Queen, Prom King/Queen and Prom Court. Maintaining the right image may even make them vulnerable. Unlike the stereotype of "mean girls," preps often get along with everyone.
 * Nerds - they are obsessed and often have superior knowledge or devotion to something, usually aren't fashion-conscious, may be introverted, and they often do well in school.
 * Mean girls - the 2004 movie "Mean Girls," starring Lindsay Lohan as a girl negotiating the jungles of teenage subcultures, put a new label on this type of teen. High heels, short skirts—whatever the latest fashion is, they're into it. They form exclusive cliques, and gossip is their native language. They crave popularity, often because they feel insecure. Yet they have a hard time with genuine relationships.
 * Emo kids - an emotional roller coaster. Their emotions are reflected in their appearance: dark clothing, streaked bangs, and tattoos and piercings. The emo style has its roots in punk culture, which tended to be more rebellious, and goth, which was gloomier. Watch these kids for signs of depression or bipolar tendencies. They are infamous for experiments with self-injury and cutting.

Popularity
A powerful, yet unstable social hierarchy structures interactions between group members in any given clique. The highest-status member, labeled by psychologists as the “Leader” or “Queen Bee”, always tops this hierarchy. In her now famous ethnography of adolescent cliques, ‘’Queen Bees and Wannabes: Helping your Daughter Survive Cliques, Gossip, Boyfriends & Other Realities of Adolescence,’’ author Rosalind Wiseman explains the standard set of roles most frequently adopted by male and female clique members.

Females: Males:
 * Queen Bee – Leader: rules by “charisma, force, money, looks, will, & manipulation”.
 * Sidekick – Lieutenant: invariably supports the Queen Bee’s opinions.
 * Banker – Gossip: collects and employs information for her own gain until part of clique, then works for benefit of Queen Bee and Sidekick.
 * Floater – Similar to a Liaison; closely associated with multiple cliques.
 * Pleaser – Can be in or out of clique: immediately adopts all of the Queen Bee and Sidekick’s opinions, yet never gains their approval and is often treated with indifference by the Queen Bee.
 * Target – Outside of the clique; regularly excluded and humiliated.
 * Leader – Like the Queen Bee except well respected: Athletic, tough, rich, & gets the girls.
 * Flunkie – Like the Pleaser, he does anything asked of him, but he also responds to any member. Inadvertently annoys others with his actions regularly.
 * Thug – Although often smarter than he lets on, the Thug communicates primarily through nonverbal bullying. He typically appears popular, but may have had a rough past or childhood.
 * The Get Wits – Groupies of male clique: respected by adults as high-achieving “good kids,” but only unsought tag-a-longs to the clique.

Although too rigid to be entirely accurate across samples, these basic denominations are useful for discussing general behaviour and organization within cliques. The role hierarchies within cliques are significantly more stable than the individual members. Maintaining one’s status and power requires constant effort. Queen Bees and Leaders must work the hardest to protect their positions and typically become manipulative and disliked in the process. For example, a Leader or Queen Bee may keep objective attention off of him or herself by unpredictably alternating praise and criticism of other members (see relational aggression). They may also change the way the clique views activities, values, and opinions of things to keep the other members unsure of where they stand in the group.”

The Leader or Queen Bee also maintains power over group membership -- exercised through both tacit and explicit rejection of prospective members -- as well as the final say in accepting new members, regardless of the opinions of other members. The majority of new memberships results from one of two approaches: invitation or application. The “invitation” approach originates within the clique: a current member of a clique invites a potential member either explicitly or by indirect socialization, which consists of the clique attempting to demonstrate the joys and benefits of membership. Aspiring peers who have not been invited can also “apply” by courting the lowest ranking members and progressing up to the Leader or Queen Bee who will decide whether to accept him or her.

Elements of popularity
Advanced and adaptable social skills are the best predictors of popularity, but further predictors of popularity are difficult to identify, primarily because the schema of “popularity” represents the interaction between two distinct concepts. Popularity breaks down into sociometric status (sometimes called “likability”), which measures peers’ private feelings toward the individual, and perceived popularity, which reflects the individual’s status, prestige, and power.

Socio-metric status is determined by fairly universally valuable characteristics including social skills, friendliness, and sense of humour. The foundations of perceived popularity, on the other hand, vary widely. Some popular adolescents are high in both characteristics, but they more often develop in distinct individuals and cliques, all considered “popular” during adolescence.

Regardless of popularity type, highly popular individuals influence local norms and behaviours in similar ways: “adolescents are easily swayed by the opinions of high-status peers to endorse activities they might otherwise reject and to run the other way from activities endorsed by low-status peers, even if they secretly enjoy them.” The popular individuals themselves, however, fare differently depending on the root of their status. Several recent studies proved the discriminant validity of the two groups and found that perceived popularity in high school is predictive of alcohol use, sexual activity, and smoking. It may also be associated with a lasting drop in sociometric status. Several recent studies suggest that long-term outcomes are generally more positive for individuals who were neither Isolates nor among the most popular during adolescence.

Personal factors
A status hierarchy much like that within individual cliques organizes the various cliques within each peer crowd. The crowds within a given school are also perceived hierarchically. Crowd ranking can sometimes change but is generally quite stable across time and schools. Part of a clique’s popularity status is based on the crowd with which its members associate, thus similarly-popular cliques within the same crowd are more likely to move within the hierarchy than are similar crowds within the larger peer context.

Both because students meet and seek friends with others who share their interests (“selection”) and because much of clique members time, both free and structured, takes place in the company of the other members (“socialization”), cliques are usually defined by common attitudes and activities. Among the most powerful determinants of clique membership are orientation toward school, orientation toward teen culture, and involvement in antisocial behaviour.

Orientation toward school
Because studying time and partying time conflict, most individuals are rarely exposed to individuals from the opposite end of this spectrum during unstructured time. Membership in the same clique with peers whose values are high distinct is thus uncommon. Individuals with only somewhat different views of school, however, are likely to belong to the same clique, and socialization is likely to decrease their differences over time. For example, girls’ decisions about enrolment in advanced math are significantly related to those of their close friends. A study of 78 high schools found that even controlling for past achievement, the GPAs of an individual’s close friends reliably help predict grades; in fact “of all the characteristics of friends that influence adolescents’ behaviour, their friends’ school performance has the greatest impact, not only on their own academic achievement, but also on their involvement in problem behaviour and drug use.”

Orientation toward teen culture
Similar taste in music and clothing signal others with potentially shared interests and values and often suggest the leisure activities and substance use patterns of which he or she approves. Thus adolescents emulating similar cultural standards are likely to become friends and these friends are likely to encourage these aspects of their attitudes, behaviours, and dress. Participation in subcultures can also reinforce belonging. In many cases, clique members can be easily identified based on dress alone.

Antisocial activity
Research does not support the common belief that troubled adolescents have few or no friends. Instead such individuals gravitate toward one another and form their own cliques, although these friendships do often differ from the friendships of more socially acceptable children. This general self-sorting trend applies in different ways to specific kinds of antisocial behaviour. A few of the most studied are substance use, aggression, and depressive symptoms.

Similarity in substance use is one of the most powerful factors in clique development and lasting membership, even serving as the earliest predictor of cross-gender friendships and the most common basis for multi-ethnic cliques. Alcohol and drug use are predicted by the interaction between number of substance using friends, the extent of their substance use, and perceived closeness to those friends ; a substance-free adolescent is thus unlikely to seek out or be accepted by a clique characterized by frequent substance use and even more unlikely to remain substance-free long after entering such clique Cliques typically fall into one of four categories and clique membership reliably predicts individual behaviour. Members of High Functioning and Engaged cliques demonstrated the best long-term outcomes, whereas Maladjusted clique membership predicted low achievement, chronic substance abuse, and confrontation with authorities and Disengaged clique members and others who abstained completely typically exhibited abnormally high anxiety and inhibition.
 * Substance use
 * High Functioning cliques consisted of “a network of high-achieving friends who were involved in school-based extracurricular activities and who reported low use of alcohol and few symptoms of depression.”
 * Maladjusted cliques “showed the opposite pattern”: uninvolved in school performance and organized activities, used alcohol frequently and to excess, and reported multiple symptoms of depression.
 * ‘‘disengaged'' cliques did not encourage engagement “in much of anything, including drinking.”
 * ‘‘engaged'' cliques consisted of friends who “engaged in school, achieved decent grades, and neither abstained from nor abused alcohol.”

Gravitation toward similar peer groups can be especially dangerous for adolescent with aggressive tendencies. A recent observational study on antisocial, aggressive boys established that clique members tended to live in the same neighbourhood, where they met and bonded through unstructured, unsupervised activities. Since antisocial groups encourage antisocial behaviour, aggressive behaviours tend to escalate rapidly within groups of aggressive adolescents. In the case of bullies this effect is so detrimental that those without any friends are actually more likely to improve over time than those with friends and generally experience better long-term outcomes. In the most extreme cases, these groups may become gangs or practice less organized, but equally dangerous, violent delinquency
 * Aggression


 * Depression

Although these maladjusted, detrimental cliques can develop among adolescents of either gender, those based on aggression and delinquency are more often observed in males. In females, adjustment problems are more often manifested as internalizing problems, rather than the externalizing problems common among their male peers. Research shows, however, that both internalizing and externalizing behaviours are negatively related to the subjective sense of strong, reliable group belonging, even controlling for adolescent age, gender, ethnicity, family structure, and parents’ educational level.

Because adolescent females, on average, both report stronger feelings of group belonging and place greater importance on this feeling than do their male peers, girls who do not feel accepted may be more susceptible than equally excluded boys to forming and conforming to cliques based on shared maladaptive behaviour. If so, differences in internalizing or externalizing behaviours of adolescent boys and girls may be magnified during adolescence, contributing to the significant gender differences observed in adult outcomes such as incarceration and mood disorders. For example, the same cycle of selection and socialization known to exacerbate aggression applies to the internalizing behaviours associated with depression. One study on the emergence of depression in adolescence found that even controlling for the effects of age and pubertal development, gender predicted several small but significant differences: (a) depressive symptoms and negative peer relations predicted increasing levels of reassurance-seeking in female subjects; (b) initial levels of reassurance-seeking predicted deteriorating friendship quality among girls and initial levels of depressive symptoms, which were higher among girls, predicted low friendship stability among all subjects, and (c) “reassurance-seeking combined with poor peer experiences predicted increases in girls’ depressive symptoms."

Perhaps related to the role of reassurance-seeking, those who both value and experience social acceptance are far less likely to exhibit problem behaviour than those who value group membership equally, but are uncertain of their relationship. This relationships is better predicted by self-esteem than the actual quality of the relationships, although also directly related to discordance in personal and peer ratings of status. This effect likely arises cyclically: troubled children are rejected by their peers for their undesirable behaviour, while rejected children receive less normative socialization and behave more problematically.

Demographic factors
Although there are exceptions, demographic factors typically influence adolescent crowd membership even before real cliques begin to form and often influence clique membership more powerfully than personal or behavioural characteristics. Many of the effects on clique composition described below may be largely attributed to crowd segregation.

Age
Because the contemporary school system divides children by age and structures the majority of most adolescents’ time and social exposure, age is the most universal common factor among clique members; notable exceptions include friendships formed in neighbourhoods or on the internet and those initiated with early-maturing pubertal girls, all of which are often detrimental to the younger friend.

Gender
Gender is perhaps the strongest demographic determinant of clique composition in very early puberty. During childhood and early adolescence sex cleavage (social segregation) between cliques is almost absolute. However, unlike other factors, gender division is temporary.

Socioeconomic status
Another, less advantageous, powerful determinant of clique formation is socioeconomic class. This trend was first published in the famous “Elmtown’s Youth Study,” which found that “almost never did adolescents from one social class associate with students from a class that was two ranks higher or lower. A diverse array of follow-up studies have confirmed that class-consciousness steadily increases throughout adolescence, so that by mid-adolescence clique membership across significantly different social backgrounds is highly anomalous.

Ethnicity
In the United States race remains an even stronger determinant of friendship than socioeconomic status. Like socioeconomic status, ethnicity is not a strong determinant of childhood friendships, but becomes increasingly potent with age. By high school, ethnically mixed cliques are rarely observed. This pattern of social segregation is strongest between black students and all other students and most prevalent in schools where students are divided into academic tracks. This is because various factors disadvantage black children, affecting performance in some cases and adult decisions in others so that in many cases black children are disproportionately likely to be placed in lower tracks, regardless of intelligence or performance resulting in uneven distribution between tracks in the majority of American high schools. Researchers suggest that because close friends in adolescence “usually have similar attitudes toward school, similar educational aspirations, and similar school achievement levels,” early tracking may both decrease exposure to peers of other racial and socioeconomic backgrounds and decrease perceived similarity with the majority of those peers  Racial divisions are most acute in tracked schools but are fundamental to crowd and clique composition in almost all American schools, and thus cannot be attributed to, nor changed by, any one educational program. More encouragingly, however, longitudinal observations suggest that interventions in early childhood may have the potential to influence social segregation: the more schools foster close cross-racial friendships in childhood the less peer group segregation manifests.

Religion
A well-established factor in clique composition is religious background, affiliation, and participation. This is somewhat confounded by overlap with socioeconomic status, but also relates to behavioural correlates of religion and selection by both individual and their peers.

Reputation determinants and effects
Cliques reputation is often determined by their most noticeable behavioural characteristic that is shared among their members. The characteristic might be so salient that it could dominate the way that members of that clique are perceived and treated by other peers regardless of the individual differences that each member has. For example, a clique group could be perceived as athletic, but say an individual in that group is very smart and gets good grades in school. That individual would be treated based on his athletic characteristics rather than his intellectual abilities. When people are treated based on a single characteristic it changes their self-image, resulting in a change in which they are. This phenomenon is known as the looking glass self; individuals become more like the way they think others perceive them. So for the example where the individual was treated based on his athletic abilities rather than his intelligence, that person will likely focus his attention more on sports rather than doing well in school, resulting in him or her to become even more like the clique he or she is a part of. This phenomenon where individuals in a group tend to be more like each other than non-group members is known as group homophile. Children choose to be friends of people who share similarities with themselves, its very rare that you see people who are polar opposite and are good friends. This explains why similar characteristics among clique members establish what the cliques reputation is, and allows you to tell the difference of one clique from the other.

Clique membership and social adjustment in children's same-gender cliques
Most people agree that children are affected by whom they hang around with, but what is not well understood is the specific characteristics that children of similar types of groups share. The focus of these authors research was to discover the different emotional and social effects that members of the same cliques share. For their study they divided the 473 fourth and fifth graders into five groups, which were competent, tough, average, withdrawn, and incompetent/aggressive. The researchers did this by having students rate their classmates on several characteristics; bright, fun, bully, withdrawn, athletic, prosaically, reactive aggression. They then measured differences among groups by asking children questions regarding peers social status and behavioral characteristics. For example they asked participants to nominate up to three participating classmates who “tries to get what he or she wants by hitting, shoving, pushing or threatening others.” In addition, they asked children questions about themselves that regarded to levels of loneliness and children’s social dissatisfaction.

The researcher's discovered differences in emotional well being and social satisfaction between different types of clique groups. They found that competent and average groups showed positive characteristics such as good interpersonal skills, whereas withdrawn, incompetent/aggressive and tough cliques lacked emotional well-being and social satisfaction. Another discovery was that social status levels did not distinguish average, competent and tough cliques from one another. Therefore if an individual is in one of these three groups they are no more likely to have a high social status than a low social status. Their conclusion to these findings was that even when taking into account individuals social status level, the type of clique people are in has a significant affect on their social and emotional characteristics.

Change and stability in childhood
A recent study done by Witvliet, Van Lier, Cuijpers and Koot shows the differences in behavioural characteristics between clique members and non-clique members in early elementary school, the stability of clique membership and whether the differences in these characteristics are gender oriented. Three hundred first-grade students (151 boys, 149 girls) from eleven different elementary schools in the Netherlands participated. The children were examined by being asked to determine their best friends. This friendship was considered valid if the other child reciprocated the elected friendship. The child was considered to be in a clique when the following criteria were overcome 1) consisted of at least three children 2) each child had to have more connections with members than non-members and 3) a link had to occur between all members of clique. Their peers to determine who was liked the most versus who was liked the least then rated children. The children were also asked to determine behavioural characteristics of participants and who best fit the description of characteristics such as aggressive, anxious, etc.  The peer study was followed through every spring and children were given a small reward for their involvement.  These results were then used to compare between clique members and non-clique members.  These results were also used to discuss the children's characteristics while also separating based on gender.  In first grade, 29 cliques were found with an average of 5.3 members. In second grade 25 cliques were found with an average of 6.2 members. This study suggests that clique members tend to be more adjusted and that gender may have some form of influence on the results. This study showed that isolated girls would have more behavioural problems than isolated boys.

Effect of cliques on the development of psychopathology in children
Researches have often conducted studies to determine whether or not membership to a clique produces positive or negative development. In one 4 year study of 451 children from age nine to twelve, Miranda Witvliet along with Pol A. C. van Lier, Mara Brendgen, Hans M. Koot, and Frank Vitaro examined longitudinal associations between clique membership status and internalizing and externalizing problems during late childhood. In this quasi-experiment the researchers aimed to discover if clique membership status may actually be linked to increases in children’s psychopathology. Children from five different elementary schools in northwestern Quebec, Canada were the participants of this particular study. In the study, clique membership status was identified through social network analysis, and peer nominations were used to assess internalizing and externalizing problems. The study used the program, Kliquefinder, to identify clique membership status through social network analysis. Through use of behavioural descriptions on the Pupil Evaluation Inventory (PEI), peer nominations of externalizing and internalizing behaviours were obtained.

Through this study, Witvliet, van Lier, Brendgen, Koot, and Vitaro noted that externalizing problems increased among clique members. They found that clique members compared to isolated children showed, on average, an increase in externalizing problems across that same period. While no sex differences were found in the link between clique membership status and internalizing problems, the association found between clique membership and an increase in externalizing problems was specific to boys only. The researchers claimed that these results support the hypothesis that clique membership protects children against developing internalizing problems.

Decline of cliques
During middle adolescence, the social norms that once enforced sex cleavage shift to encourage mixed-sex socialization. Single-sex cliques begin to seek out the company of opposite-sex cliques, although at first almost all direct interaction remains within the individual cliques despite the presence of the other clique(s). Gradually, intersex relationships and mixed sex cliques develop, closely followed by the first romantic relationships, which typically appear among early-pubertal, high-status, more physically developed adolescents. Over the course of late adolescence romantic relationships replace clique hierarchies as the most potent determinants of social status and networks of dating couples eventually replace more rigidly structured cliques.

The chronological relationship between changing gender-dynamics and the dissolution of organized, hierarchical cliques is well-established, but not fully understood. One theory asserts that sex cleavage both arises and wanes because cliques are largely sorted by common interests: girls and boys are generally interested in different activities until dating emerges, after which they share a highly-valued activity. (164) This idea is consistent with the direct relationship between pubertal development and the appearance of other-sex friends. One possible explanation for this progression argues that children are socialized from childhood to conform to gender roles and during early adolescence cognitive developments promote active self-presentation and anxiety over peer-perceptions; as a result, early adolescents become more consciously aware of both the benefits of conventional gender identity and the threat of ridicule or rejection in response to unorthodox behaviour. According to this framework, gender segregation subsides because the same inculcated gender roles that prompt children to distance themselves from anything associated with the opposite sex also encourage adolescents and adults to demonstrate heterosexual desire and sexual/seductive competence. This argument explains the drastic shift in the targets of ridicule from those who were too androgynous in middle school to those who can not or do not attract sexual attention in high school.

The effects of such social enforcement of gender-roles, may take the form of relational aggression, bullying, and gay bullying.

Implications
Perhaps the most consequential finding from the empirical study of adolescent cliques is that they are not an inherently negative force, but rather part of normative development in our society. Although it is certainly true that certain cliques can negatively influence development, others can actually benefit adolescents. In cases in which clique influence is negative, it is encouraging to note that while most forms of interventions are fairly ineffective and peer group interventions frequently produce iatrogenic effects, interventions with parents have yielded encouraging results.