Evolutionary psychology and intelligence research.

This article seeks to unify two subfields of psychology that have hitherto stood separately: evolutionary psychology and intelligence research/differential psychology. I suggest that general intelligence may simultaneously be an evolved adaptation and an individual-difference variable. Tooby and Cosmides's (1990a) notion of random quantitative variation on a monomorphic design allows us to incorporate heritable individual differences in evolved adaptations. The Savanna–IQ Interaction Hypothesis, which is one consequence of the integration of evolutionary psychology and intelligence research, can potentially explain why less intelligent individuals enjoy TV more, why liberals are more intelligent than conservatives, and why night owls are more intelligent than morning larks, among many other findings. The general approach proposed here will allow us to integrate evolutionary psychology with any other aspect of differential psychology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Ecological momentary assessment (EMA) in studies of substance use.

Ecological momentary assessment (EMA) is particularly suitable for studying substance use, because use is episodic and thought to be related to mood and context. This article reviews EMA methods in substance use research, focusing on tobacco and alcohol use and relapse, where EMA has been most applied. Common EMA designs combine event-based reports of substance use with time-based assessments. Approaches to data organization and analysis have been very diverse, particularly regarding their treatment of time. Compliance with signaled assessments is often high. Compliance with recording of substance use appears good but is harder to validate. Treatment applications of EMA are emerging. EMA captures substance use patterns not measured by questionnaires or retrospective data and holds promise for substance use research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

General Intelligence as a Domain-Specific Adaptation.

General intelligence (g) poses a problem for evolutionary psychology's modular view of the human brain. The author advances a new evolutionary psychological theory of the evolution of general intelligence and argues that general intelligence evolved as a domain-specific adaptation for the originally limited sphere of evolutionary novelty in the ancestral environment. It has accidentally become universally important merely because we now live in an evolutionarily novel world. The available data seem to support the author's contention that intelligent people can solve problems better than less intelligent people only if the problems are evolutionarily novel, and they have no advantage in solving evolutionarily familiar problems. This perspective can also solve some empirical anomalies, such as the "central theoretical problem of human sociobiology" (D. R. Vining, 1986, p. 167) and the geographic distribution of general intelligence throughout the world. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Prevalence of substance use disorders among veterans and comparable nonveterans from the National Survey on Drug Use and Health.

The Department of Veterans Affairs (VA) operates over 200 substance abuse treatment programs. Historically, planning for these services has not been informed by population-level prevalence data. Accordingly, the authors analyzed the National Survey on Drug Use and Health data from 2000 to 2003 to estimate substance use and substance use disorder prevalence among all veterans. The authors present the data in comparison to comparable nonveterans. Data show notable rates of substance use among veterans; 22.6% and 4.4% of veterans reported binge drinking and any illicit drug use in the past month, respectively. In addition, prevalence varied by geographic location. Monitoring substance use prevalence is needed to ensure the VA and other substance use providers can plan appropriate substance use disorder services for current and future enrollees, including veterans of the current military operations in Iraq and Afghanistan. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Buffering effect of religiosity for adolescent substance use.

This research examined the hypothesis that religiosity buffers the impact of life stress on adolescent substance use. Data were from a sample of 1,182 participants surveyed on 4 occasions between 7th grade (mean age = 12.4 years) and 10th grade. Religiosity was indexed by Jessor's Value on Religion Scale (R. Jessor & S. L. Jessor, 1977). Zero-order correlations showed religiosity inversely related to alcohol, tobacco, and marijuana use. Significant Life Events×Religiosity buffer interactions were found in cross-sectional analyses for tobacco, alcohol, and marijuana use. A latent growth analysis showed that religiosity reduced the impact of life stress on initial level of substance use and on rate of growth in substance use over time. Implications for further research on religiosity and substance use are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reliability of self-reported age of substance involvement onset.

The authors investigated the reliability of self-reported age of onset (AO) for alcohol, tobacco (cigarette), and illicit drug involvement. Participants were 410 young adults taking part in an 11-year longitudinal study. A moderate degree of reliability was found for the 3 substances. Despite this level of stability, results illustrate a tendency for reported AOs to increase over time. The trend is more salient for participants who reported younger AOs at the initial assessment. Findings also indicate that, for alcohol and tobacco, more individuals were classified as early onset based on Year 1 compared with Year 11 reports. Despite these systematic changes, at least for alcohol and illicit drugs, age at which onset was assessed did not moderate the association between AO and substance-related outcomes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The role of self-control in early escalation of substance use: A time-varying analysis.

The research tested prediction about the role of temperament and self-control in early substance use (tobacco, alcohol, and marijuana). A sample of 1,526 participants was assessed in 6th grade (mean age=11.5 yrs) and followed with yearly assessments through 9th grade. Latent growth models showed temperament dimensions were related to early substance use, and their effects were mediated through generalized self-control ability. Time-varying effects indicated rate of growth in substance use was higher among participants who showed increases in poor self-control and lower among participants who showed increases in good self-control. Results in self-report data were corroborated by independent teacher ratings. Findings are discussed with reference to epigenetic models of protection and vulnerability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Randomized trial of brief family interventions for general populations: Adolescent substance use outcomes 4 years following baseline.

This study examined the long-term substance use outcomes of 2 brief interventions designed for general population families of young adolescents. Thirty-three public schools were randomly assigned to 3 conditions: the 5-session Preparing for the Drug Free Years Program, the 7-session Iowa Strengthening Families Program, and a minimal contact control condition. The pretest involved 667 6th graders and their families. Assessments included multiple measures of initiation and current use of alcohol, tobacco, and marijuana. Pretest data were collected in the 6th grade and the reported follow-up data were collected in the 10th grade. Significant intervention-control differences in initiation and current use were found for both interventions. It is concluded that brief family skills-training interventions designed for general populations have the potential to reduce adolescent substance use and thus have important public health implications. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Linking antisocial behavior, substance use, and personality: An integrative quantitative model of the adult externalizing spectrum.

Antisocial behavior, substance use, and impulsive and aggressive personality traits often co-occur, forming a coherent spectrum of personality and psychopathology. In the current research, the authors developed a novel quantitative model of this spectrum. Over 3 waves of iterative data collection, 1,787 adult participants selected to represent a range across the externalizing spectrum provided extensive data about specific externalizing behaviors. Statistical methods such as item response theory and semiparametric factor analysis were used to model these data. The model and assessment instrument that emerged from the research shows how externalizing phenomena are organized hierarchically and cover a wide range of individual differences. The authors discuss the utility of this model for framing research on the correlates and the etiology of externalizing phenomena. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Moderators of the relation between substance use level and problems: Test of a self-regulation model in middle adolescence.

The authors tested predictions, derived from a self-regulation model, about variables moderating the relationship between level of substance use (tobacco, alcohol, and marijuana) and problems associated with use. Data were from two independent studies of adolescents, with mean ages of 15.4 and 15.5 years (Ns=1,699 and 1,225). Factor analysis indicated correlated dimensions of control problems and conduct problems. Protective moderation was found for variables indexing good self-control; risk-enhancing moderation was found for variables indexing poor self-control. These effects were generally independent of deviance-prone attitudes and externalizing symptomatology. Multiple-group structural modeling indicated moderation occurred for paths from life stress and coping motives and for paths from level to control and conduct problems. Moderation effects were also found for parental variables, peer variables, and academic competence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A genetic association with the development of alcohol and other substance use behavior in Asian Americans.

Studies of Asian adults have found that alcohol use and alcohol dependence are related to variation in the aldehyde, dehydrogenase (ALDH2) gene. To investigate the association of ALDH2 with the development of drug involvement, the authors analyzed retrospective information about the onset and regular use of alcohol and other substances as reported by 180 Asian American college students. Possession of an ALDH2*2 allele was not related to initiation of alcohol use or having ever been intoxicated, but individuals with ALDH2*2 alleles were less likely to be regular drinkers, were less likely to have engaged in a binge-drinking episode, reported a lower number of maximum drinks consumed in a 24-hr period, and were less likely to have used tobacco regularly than those without this genetic variant. These findings suggest that ALDH2 is associated with the development of not only alcohol-related behavior but other substance use behavior as well. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The influence of general identity disturbance on reports of lifetime substance use disorders and related outcomes among sexual minority adults with a history of substance use.

Previous research has shown that sexual minority (i.e., nonheterosexual) individuals report increased problematic substance use involvement, compared with their sexual majority counterparts. We hypothesize that feelings of an unstable sense of self (i.e., identity disturbance) may potentially drive problematic substance use. The purpose of the current study is to examine identity disturbance among sexual minorities as a potential explanatory mechanism of increased sexual minority lifetime rates of substance dependence. Measures of identity disturbance and three indicators of sexual orientation from lifetime female (n = 16,629) and male (n = 13,553) alcohol/illicit drug users in Wave 2 of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) were examined. Findings generally showed that the increased prevalence of alcohol dependence, illicit drug dependence, and combined alcohol/illicit drug dependence as well as a younger age of alcohol use initiation among sexual minority women was associated with elevated levels of identity disturbance. The results were consistent with a mediational role for identity disturbance in explaining the association between sexual minority status and substance dependence and were generally replicated among male sexual minority respondents. The current research suggests that identity disturbance, a predictor of substance use, may contribute to heightened risk for substance dependence among certain subgroups of sexual minority individuals. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Psychology and psychotropic drugs.

Discusses issues that need to be considered in psychology's internal debate on whether to seek the right to prescribe psychotropic drugs. For example, psychology offers a decisive alternative to medical model. Within this philosophy of psychology, psychiatry's treatment of the person as an organism misses the essential humanity of psychological life. With the exception of some psychoanalysts, psychiatrists are seen from this theoretical perspective as fundamentally misguided in their use of psychotropic drugs which merely mask the symptoms rather than face the genuinely human problem. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Concerning Intelligence.

Comments on the article by Alexander G. Wesman (see record 1968-18802-001), which proposed an organization of intelligence that views intelligence as a composite of all past learning experiences of the individual. The current author suggests that this is the same as saying that intelligence is knowledge, but states that intelligence is really the ability to acquire knowledge. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Are work stressors related to employee substance use? The importance of temporal context assessments of alcohol and illicit drug use.

In this study, the author explored the relations of 2 work stressors (work overload and job insecurity) to employee alcohol use and illicit drug use. The primary goal was to explore the importance of temporal context (before work, during the workday, and after work) in the assessment of substance use compared with context-free (overall) assessments. Data were collected from a national sample of U.S. workers (N = 2,790) who took part in a broad cross-sectional survey on workplace health and safety. Consistent with past research, the results fail to support a relation between work stressors and overall measures of alcohol and illicit drug use. However, the results support the relation of work stressors to alcohol and illicit drug use before work, during the workday, and after work. These results provide support for both the stress-induced substance use and stress response dampening propositions of the tension-reduction hypothesis. When exploring the work environment as a potential cause of employee substance use, these results underscore the importance of measures that assess alcohol and illicit drug use in terms of their temporal relation to the workday. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Disclosure of sexual orientation and subsequent substance use and abuse among lesbian, gay, and bisexual youths: Critical role of disclosure reactions.

Research on whether disclosure of sexual orientation promotes lower substance use among lesbian, gay, and bisexual (LGB) individuals has been inconsistent. One reason for this may be that disclosure results in accepting and rejecting reactions. The current report longitudinally examines whether the types of reactions to disclosure are associated with substance use and abuse among 156 LGB youths (ages 14–21). Neither the number of disclosures nor the numbers of accepting or neutral disclosure reactions were associated with substance use or abuse. However, the number of rejecting reactions to disclosure was associated with current and subsequent alcohol, cigarette, and marijuana use, even after controlling for demographic factors, social desirability, and emotional distress. Further, accepting reactions were found to moderate or protect youths from the negative role of rejecting reactions on alcohol use, but not other substances. This research indicates that, rather than disclosure per se, it is the number of accepting and rejecting reactions in response to disclosure that are critical to understanding substance use among LGB youths. Further, the results suggest that to be maximally effective, substance use prevention and treatment efforts should address rejecting reactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relation between childhood disruptive behavior disorders and substance use and dependence symptoms in young adulthood: Individuals with symptoms of attention-deficit/hyperactivity disorder are uniquely at risk.

Most prior literature examining the relations among attention-deficit/hyperactivity disorder (ADHD), conduct disorder (CD), and substance use and abuse suggests that CD fully accounts for the ADHD-substance abuse relation. This study sought to test an alternate theory that individuals with symptoms of both ADHD and CD are at a special risk for substance abuse. Relations between childhood ADHD and CD symptoms, and young adult tobacco, alcohol, marijuana, and hard drug use and dependence symptoms, were examined in a sample of 481 young adults. ADHD and CD symptoms interacted to predict marijuana dependence symptoms and hard drug use and dependence symptoms, such that individuals with high levels of both ADHD and CD had the highest levels of these outcomes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Work-related risk factors and employee substance use: Insights from a sample of Israeli blue-collar workers.

Although studies have found evidence that certain workplace conditions in North American enterprises may serve as risk factors for alcohol and illicit drug use, little is known regarding the generalizability of these findings to enterprises in other countries. To address this gap, we collected data from a random sample of 569 blue-collar workers employed in nine different facilities of one of Israel's largest manufacturing firms. The results of zero-inflated Poisson and ordered probit regressions partly confirmed earlier findings reported in North America, with a heightened rate of a substance use among those perceiving (a) more permissive drinking norms, (b) lower supervisor ability to handle substance use problems, (c) greater exposure to job hazards, and (d) lower levels of coworker interactions. Permissive drinking norms were also found to moderate the associations between the other risk factors and substance use. (PsycINFO Database Record (c) 2011 APA, all rights reserved)