Context and cognitions: environmental risk, social influence, and adolescent substance use

This study examined the cognitions thought to mediate the impact of context on adolescent substance use and also the extent to which context moderates the relations between these cognitions and use. Risk cognitions and behaviors were assessed in a panel of 746 African American adolescents (M age 10.5 at Wave 1, 12.2 at Wave 2). Results indicated that adolescents living in high-risk neighborhoods were more inclined toward substance use and more likely to be using at Wave 2. These context effects were mediated by the adolescents' risk cognitions: their risk images, willingness to use, and intentions to use. Also, context moderated the relation between willingness and use (the relation was stronger in high-risk neighborhoods) but it did not moderate the intentions to use relation.     

The Relation Between Perceived Risk and Preventive Action: A Within-Subject Analysis of Perceived Driving Risk and Intentions to Wear Seatbelts

Intentions to wear seatbelts in 12 different driving situations were predicted from attitudes toward wearing seatbelts, subjective norms concerning seatbelt uses, and perceived driving risk. In a given driving situation, appropriate measures of attitudes and subjective norms both had significant effects on intentions to wear a seatbelt, whereas there was little relation between risk and intentions. Intentions across the 12 driving situations were significantly related to perceived driving risk, both for aggregate data and for a substantial portion of individual subjects. However, further analyses indicated that risk seemed to affect intentions indirectly through subjective norms and attitudes associated with seat-belt use. The results suggest that attempts to increase seatbelt use should target all relevant beliefs important in determining people's attitudes toward and subjective norms concerning seatbelt use, rather than just focusing upon making people aware of the risks associated with driving.     

An application of the prototype willingness model to drivers' speeding behaviour

We tested the prototype willingness model (PWM). The participants (N = 198) completed online questionnaire measures of PWM constructs (Time 1) and subsequent speeding behaviour (Time 2). Path analyses showed that the PWM accounted for 89% of the variance in subsequent (self‐reported) speeding behaviour. This significantly exceeded the variance accounted for by the theory of planned behaviour. In line with the PWM, both behavioural intention and behavioural willingness had direct effects on behaviour. Behavioural willingness had a significantly larger effect. Attitude and subjective norm both had indirect effects on behaviour through both behavioural intention and behavioural willingness. Prototype (similarity) perceptions had indirect effects on behaviour through behavioural willingness only. The findings support the notion that driving is governed by reactive decision‐making (willingness), underpinned by prototype perceptions, attitudes and subjective norms, to a greater extent than it is deliberative decision‐making (intentions), underpinned by attitudes and subjective norms. The implications for safety interventions are discussed.     

Predicting students' intention to smoke by theory of planned behaviour variables and parental influences across school grade levels

Differences were examined in Theory of Planned Behaviour determinants of students' intention to smoke including parents' attitudes towards smoking and parents' current cigarette use among Greek students of different school grade levels. Students (N?=?763) aged 10-18 years reported their attitudes towards smoking, subjective norms, perceived behavioural control, self-identity and intention to smoke while their parents (N?=?525) reported their attitudes towards smoking and their current cigarette use. All the TPB variables increased from lower to higher school grade level. Multi-sample path analyses showed that parent's attitudes towards smoking positively predicted students' intention to smoke only for elementary school children. Parents' current cigarette use did not contribute significantly. Students' attitudes, perceived behavioural control and self-identity predicted systematically intention to smoke in contrast to the subjective norm that did not contribute at all. Perceived behavioural control contributed to a higher degree in intention to smoke for senior high school students compared to the junior high school and elementary students. Self-identity contributed to a higher degree in intention to smoke for elementary compared to the junior high school students. The results of this study suggests that the determinants of smoking vary between early and late adolescence.     

Negative Beliefs as a Moderator of the Intention–Behavior Relationship: Decisions to Use Performance-Enhancing Substances

The theory of reasoned action framework was used to examine performance-enhancing substance use among a sample of college athletes in a prospective longitudinal design. Results indicate that attitudes and subjective norms predicted intention to use the substances, and these intentions predicted actual substance use 6 weeks later. A statistically significant interaction emerged between negative beliefs and intentions predicting behavior such that as negative beliefs grew increasingly negative, the intention–behavior relationship became stronger. Practical and theoretical implications of the influence of negative information on the intention–behavior relationship are discussed.     

Predicting students’ intention to smoke by theory of planned behaviour variables and parental influences across school grade levels

Differences were examined in Theory of Planned Behaviour determinants of students’ intention to smoke including parents’ attitudes towards smoking and parents’ current cigarette use among Greek students of different school grade levels. Students (N?=?763) aged 10–18 years reported their attitudes towards smoking, subjective norms, perceived behavioural control, self-identity and intention to smoke while their parents (N?=?525) reported their attitudes towards smoking and their current cigarette use. All the TPB variables increased from lower to higher school grade level. Multi-sample path analyses showed that parent's attitudes towards smoking positively predicted students’ intention to smoke only for elementary school children. Parents’ current cigarette use did not contribute significantly. Students’ attitudes, perceived behavioural control and self-identity predicted systematically intention to smoke in contrast to the subjective norm that did not contribute at all. Perceived behavioural control contributed to a higher degree in intention to smoke for senior high school students compared to the junior high school and elementary students. Self-identity contributed to a higher degree in intention to smoke for elementary compared to the junior high school students. The results of this study suggests that the determinants of smoking vary between early and late adolescence.     

Antecedents of children's physical activity intentions and behaviour: Predictive validity and longitudinal effects

Abstract

This study examined the predictive validity and time-lagged relationships in a model of children's physical activity intentions, attitudes, perceived behavioural control (PBC), behaviour and past behaviour using the Theory of Planned Behaviour (TPB; Ajzen, 1985) as a framework. In Study 1, 386 children aged 12–14 years completed measures of intentions, attitudes, subjective norm, PBC and past behaviour. Their physical activity behaviour was assessed one week later. Structural equation analyses supported the construct and predictive validity of the TPB with the exception of subjective norms which did not predict intentions. In Study 2,70 children completed measures of their physical activity attitudes, intentions, PBC and past behaviour. Attitudes, intentions, PBC and recent behaviour were re-assessed five weeks later. The cognitions demonstrated a moderate degree of stability over time and there were some cross-lagged effects between attitudes and PBC. Past behaviour demonstrated additive rather than attenuating effects. These results support the use of the TPB cognitions and past behaviour as a framework to examine children's physical activity behaviour.     

Global positive expectancies of the self and adolescents' substance use avoidance: testing a social influence mediational model

Grounded in theories of global positive expectancies and social influences of behavior, this investigation posited a model in which global positive expectancies are related to substance use as mediated by attitudes, subjective norms, self-efficacy, and intentions. Using a cohort sample (n = 525), structural equation modeling was employed to test the hypothesized predictions of future substance use. The findings suggest that, relative to adolescents with lower global positive expectancies, adolescents with higher global positive expectancies use substances less frequently over time because of their protective attitudinal and control-oriented perceptions towards that behavior. Additionally, results from the current investigation also extend prior findings on the factor structure of global positive expectancies, suggesting these expectancies can be viewed as a second-order factor representing optimism and two components of hope-agency and pathways.     

Perceived discrimination and substance use in African American parents and their children: a panel study

The relation between perceived racial discrimination and substance use was examined in a panel of 684 African American families, using the prototype-willingness model of adolescent health risk (F. X. Gibbons, M. Gerrard, & D. Lane, 2003). Discrimination was concurrently and prospectively related to use in the parents and the children (mean age=10.5 years at Wave 1). The discrimination-->use relation in the parents was mediated by distress (anxiety and depression). Among the children, the relation was mediated by distress as well as their risk cognitions (favorability of their risk images and their willingness to use) and the extent to which they reported affiliating with friends who were using substances. Each of these relations with discrimination was positive. In contrast, effective parenting was associated with less willingness and intention to use. Theoretical and applied implications of the results are discussed.     

The influence of significant others on attitudes, subjective norms and intentions regarding dietary supplement use among adolescent athletes

Dietary supplement use has increased significantly over the past decade. The use of supplements among adolescents seems to be influenced by their beliefs and attitudes. The influence of coaches, parents, and athletic trainers also may be important. The purpose of this study was (1) to determine whether attitudes are a better predictor of adolescents' intentions to use dietary supplements than are subjective norms, and (2) to assess the influence of significant others (coaches, parents, and trainers) on attitudes, subjective norms, and intentions among adolescent athletes. Adolescents (N = 1,626) who were enrolled in grades six through twelve in nine public schools completed a self-report questionnaire that measured attitudes, subjective norms, and intentions regarding dietary supplement use. Results indicated that attitudes were a better predictor of intentions to use dietary supplements than were subjective norms. It was also found that trainers had more influence on the attitudes, subjective norms, and intentions of adolescents regarding supplement use than did parents and coaches. Implications for prevention are addressed.     

Pizza and pop and the student identity: the role of referent group norms in healthy and unhealthy eating

Using the Theory of Planned Behavior (I. Ajzen, 1985, 1991) and referent group (student) norms and identification (D. J. Terry & M. A. Hogg, 1996), the authors longitudinally predicted healthy eating intentions and behavior in a sample of 137 university students. Specifically, attitudes, subjective norms, and perceived control predicted intentions at Time 1, which predicted self-reported behavior at Time 2. There was also a link between intentions and observed behavior at Time 2. Beyond the planned behavior variables, referent group norms for university students' eating behavior interacted with participants' identification as students to predict healthy eating intentions. The authors discussed implications for researcher's conceptualization of normative influence and for interventions into this group's eating behavior.     

Social Cognitions and Past Behavior as Predictors of Behavioral Intentions Related to Cardiovascular Health

The present study assessed the usefulness of social cognitions shared by several health behavior models for predicting behavioral intentions regarding cardiovascular health, independent of past/current behavior. Over 800 adolescents were administered a cross-sectional survey measuring intentions (regarding cigarette use, fat consumption, physical exercise), social cognitions (severity, vulnerability, benefits, self-efficacy), and past/current behavior. Hierarchical regression analyses, controlling for past/current behavior, showed a varied predictive profile across behavioral intentions. Severity estimates predicted intended cigarette use and fat consumption, while perceived benefits predicted intended physical activity. However, self-efficacy predicted intentions consistently. Collectively, social cognitions contributed an additional 0.8%, 2.5%, and 11. 6%, of the variance in smoking, dietary fat, and exercise intentions, over and above past/current behavior. Theoretical and practical implications are considered.     

Peer Victimization and Substance Use in Early Adolescence: Influences of Deviant Peer Affiliation and Parental Knowledge

Being the target of peer victimization contributes to alcohol and cigarette use during early adolescence. This 1-year longitudinal study extended the current literature by investigating the potential links between peer victimization and alcohol and cigarette initiation among a sample of 723 youths recruited from three middle schools in Southern China. We proposed a moderated mediation model to examine whether peer victimization is indirectly related to substance use via deviant peer affiliation, and whether the strength of this mediation is moderated by the level of parental knowledge for both genders. All participants self-reported using questionnaires to assess peer victimization, deviant peer affiliation, parental knowledge, and substance use. The results revealed that peer victimization was indirectly associated with increased alcohol use via deviant peer affiliation for both genders. However, deviant peer affiliation mediated the impact of peer victimization on trying cigarettes for only boys. Moreover, parental knowledge acted as a protective role for increases in alcohol use for girls, but not for boys. These findings highlight the potential role of deviant peer affiliation to explain the relationship between peer victimization and substance use, and provide important implications for addressing the adverse consequences of peer victimization.     

Pathways from proactive and reactive aggression to substance use.

Childhood aggression is a known risk factor for adolescent substance use; however, aggression is a complex construct, and developmental researchers have identified a variety of subdimensions that may be germane to substance use. Very little research has examined risk pathways from subdimensions of aggression. The current study examined a developmental model and tested whether childhood proactive aggression, reactive aggression, or both were related to the development of substance use in adolescence in a sample of 126 children (mean age at initial assessment = 10.4 years, SD = 0.51). Peer rejection and peer delinquency were examined as potential mediators of these relations. The findings suggest that proactive aggression was indirectly associated with substance use through peer delinquency. Reactive aggression was also indirectly associated with substance use through a complex mediational chain, such that high levels of reactive aggression were associated with high levels of peer rejection, which in turn were associated with peer delinquency (p = .06), which subsequently predicted substance use.     

Family risk factors and adolescent substance use: moderation effects for temperament dimensions

This research tested for moderation in the relation of family risk factors (parent-child conflict, family life events, and parental substance use) to adolescent substance use (tobacco, alcohol, and marijuana). A sample of 1,810 participants was surveyed at the mean age of 11.5 years and followed with 2 yearly assessments. Temperament dimensions were assessed with the Revised Dimensions of Temperament Survey and the Emotionality, Activity, and Sociability Inventory. Multiple-group latent growth analyses indicated moderation occurred through (a) alteration of effects of parental variables on the adolescent substance use intercept and on the peer substance use intercept and slope and (b) alteration of the effect of the peer substance use intercept on the adolescent substance use slope. The impact of parental risk factors was decreased among participants with higher task attentional orientation and positive emotionality (resilience effect) and was increased among participants with higher activity level and negative emotionality (vulnerability effect). Results from self-report data were corroborated by independent teacher reports.     

An Analysis of the Effects of Occupational Variables on Child bearing Intentions

Recent studies have indicated that the relationship between family size and occupational variables (e.g., work status, occupation, total number of years worked, career decisions) may be influenced by a number of different variables. The present study uses Fishbein's Theory of Reasoned Action to analyze the effects of different occupational variables on the beliefs, attitudes, and subjective norms that underlie intentions to have a child (within the next 3 years). Consistent with the theory, occupational variables were significantly related to childbearing intentions only if they were related to attitudes toward having a child and subjective norms. Furthermore, these latter relationships were themselves dependent upon relations between the occupational variables and underlying beliefs, evaluations, and motivations to comply. As expected, different occupational variables influenced intentions in different ways. Thus, Fishbein's theory allows a means for identifying the loci of effects of occupational variables on childbearing intentions. Finally, the two components of the model were sufficient to predict childbearing intentions; in general, occupational variables did not contribute to prediction of childbearing intentions over and above childbearing attitudes and subjective norms.     

Linking Substance Use and Problem Behavior Across Three Generations

This study examined patterns of between-generation continuity in substance use from generation 1 (G1) parents to generation 2 (G2) adolescents and from G2 adult substance use and G1 substance use to generation 3 (G3) problem behavior in childhood. Structural equation modeling of prospective, longitudinal data from 808 participants, their parents, and their children showed low levels of G1 to G2 cross-generational continuity in the general tendency to use drugs. This effect was fully mediated by G2 early adolescent behavior problems. Drug-specific residual effects were observed across generations for cigarette smoking. Once established in adolescence, substance use in G2 showed stability over time. G2 substance use at age 27 significantly predicted G3 problem behavior. G1 substance use also was related to G3 problem behavior indirectly. These findings highlight the importance of interrupting intergenerational cycles of substance use and problem behavior.     

Protection and vulnerability processes relevant for early onset of substance use: a test among African American children.

This research tested predictions from a self-regulation model of factors relevant for early onset of tobacco and alcohol use with a community sample of 889 African American children (mean age = 10.5 years). Criterion variables were peer substance use, willingness to use substances, and resistance efficacy (intention to refuse substance offers). Structural modeling indicated effects of temperament dimensions were mediated through self-control and risk-taking constructs, which were related to school involvement, life events, and perceived vulnerability to harmful effects of substances. Peer use was predicted by life events, poor self-control, and parent-child conflict; willingness was predicted by life events, risk taking, and (inversely) parental support; and resistance efficacy was predicted by perceived vulnerability and (inversely) poor self-control. Findings are discussed with reference to theoretical models of early protection and vulnerability processes.