On the Multilevel Nature of Meta-Analysis: A Tutorial,Comparison of Software Programs,and Discussion of Analytic Choices

The term “multilevel meta-analysis” is encountered not only in applied research studies, but in multilevel resources comparing traditional meta-analysis to multilevel meta-analysis. In this tutorial, we argue that the term “multilevel meta-analysis” is redundant since all meta-analysis can be formulated as a special kind of multilevel model. To clarify the multilevel nature of meta-analysis the four standard meta-analytic models are presented using multilevel equations and fit to an example data set using four software programs: two specific to meta-analysis (metafor in R and SPSS macros) and two specific to multilevel modeling (PROC MIXED in SAS and HLM). The same parameter estimates are obtained across programs underscoring that all meta-analyses are multilevel in nature. Despite the equivalent results, not all software programs are alike and differences are noted in the output provided and estimators available. This tutorial also recasts distinctions made in the literature between traditional and multilevel meta-analysis as differences between meta-analytic choices, not between meta-analytic models, and provides guidance to inform choices in estimators, significance tests, moderator analyses, and modeling sequence. The extent to which the software programs allow flexibility with respect to these decisions is noted, with metafor emerging as the most favorable program reviewed.     

Cultural Nuances,Assumptions, and the Butterfly Effect: Addressing the Unpredictability Caused by Unconscious Values Structures in Cross‐Cultural Interactions

Cultural values, cross‐cultural interaction patterns that are produced by dynamical (chaotic) systems, have a significant impact on interaction, particularly among and between people from different cultures. The butterfly effect, which states that small differences in initial conditions may have severe consequences for patterns in the long run, serves as a creative way of drawing attention to a particularly challenging aspect of such chaotic systems. Forty‐six accounts of cross‐cultural situations involving the interface of Asian and Western cultures were examined for underlying nuances (using Kluckhohn values orientations; F. R. Kluckhohn & F. L. Strodtbeck, 1961) and their possible effects. The discrepant relational perspective contributed the most to interaction difficulties but was not independent of other spheres.     

Perfectionism and psychological distress: evidence of the mediating effects of rumination

Three studies investigated the role of ruminative tendencies in mediating the effects of multidimensional perfectionism (Hewitt & Flett, 1991) on psychological distress. Study 1 (Sample 1, N = 279; Sample 2, N = 224) and Study 2 (N = 205) found evidence, cross‐sectionally and prospectively, that brooding ruminative response style either fully or partially mediated the effects of socially prescribed and self‐oriented perfectionism on psychological distress, depression and hopelessness levels. In addition, Study 3 (N = 163) confirmed these mediation effects for socially prescribed perfectionism in relation to depression and hopelessness, 2 months later, after initial levels of distress were controlled. Overall, these findings provide evidence that brooding ruminative response style is an important mechanism that can explain, in part, the relationship between perfectionism and distress. Copyright © 2006 John Wiley & Sons, Ltd.     

Optimism for the World’s Future versus the Personal Future: Application to Environmental Attitudes

Optimism and pessimism for the future have been widely studied, but little is known about distinctions among types of optimism. In the present work optimism for the personal future and optimism for a more global world’s future were shown to be related yet distinct variables among responses from 156 undergraduate students. Furthermore, World Optimism predicted lower levels of pro-environmental attitudes (the New Ecological Paradigm) whereas Personal Optimism did not after its shared variance with World Optimism was removed. Personal Optimism (but not World Optimism) was associated with Consideration of Future Consequences, a measure of locus of control, and other measures of optimism and pessimism. Discussion addresses this distinction and its implications for understanding environmental attitudes and other individual differences.     

The stresses of learning counselling: Six recent graduates comment on their personal experience of learning counselling and what can be done to reduce associated harm

This paper presents research that examines the negative and stressful aspects of learning counselling and methods for harm reduction. Using an in-depth semi-structured interviewing approach, six people who recently graduated from a UK university counselling programme have commented on their negative experiences of learning counselling and what helped or would have helped to reduce the harmful effects. This research has produced information which indicates that counselling trainees experience significant disruptions in their relationships with their family and friends; that a sizeable number of trainees report feelings of depression and or stress; and that counselling trainers have not addressed these issues effectively. The study concludes with a suggestion that an extra training component could be built into existing training frameworks that focus on the process of 'becoming a counsellor'.     

Appetitive and Defensive Arousal in Violent Video Games: Explaining Individual Differences in Attraction to and Effects of Video Games

Evidence surrounding the attraction to media violence is mixed and the effects of violent video game play on players varies across experimental participants. Differences in both may be explained by differences in experienced positive or negative arousal. This study utilizes the limited capacity model of motivated mediated message processing (LC4MP) and the motivation activation measure (MAM), which measures resting activation of the appetitive and aversive arousal systems, to explore the relationship between attraction to media violence, arousal, and aggression. In part 1, a questionnaire found that men and frequent players of violent games expected to enjoy violent games more than nonviolent games. In addition, participants whose scores on the MAM characterized them as risk takers (high scores on appetitive arousal and low scores on aversive arousal) indicated a stronger preference for violent games compared to the other three arousal types, which is in line with the LC4MP. In the experimental portion of the research, after playing a violent game, those participants characterized as risk avoidant (high on aversive arousal and low on appetitive arousal) were significantly less aggressive than all other arousal groups. Overall, results show that individual differences in the appetitive and aversive arousal systems can explain attraction to violent media. Furthermore, arousal resulting from violent video game play can be experienced as pleasant or aversive, and it is this experience of arousal that explains variations in aggressive responses to violent video games.     

The influence of babbling patterns on the processing of speech

This study compared the preference of 27 British English- and 26 Welsh-learning infants for nonwords featuring consonants that occur with equal frequency in the input but that are produced either with equal frequency (Welsh) or with differing frequency (British English) in infant vocalizations. For the English infants a significant difference in looking times was related to the extent of production of the nonword consonants. The Welsh infants, who showed no production preference for either consonant, exhibited no such influence of production patterns on their response to the nonwords. The results are consistent with a previous study that suggested that pre-linguistic babbling helps shape the processing of input speech, serving as an articulatory filter that selectively makes production patterns more salient in the input.