Decomposition can harm the accuracy of behavioural frequency reports

In survey research, the use of decomposition can lead to pronounced reporting errors as seen by overreporting and overall reporting error. A total of 87 subjects answered either decomposed or undecomposed questions concerning telephone calls made by them while at work. The questionnaire conditions varied the length of the reference period (1 week or 6 months), and the type of call (local or long‐distance). Decomposition conditions introduced either spatial or temporal cues. In all comparisons, decomposed questions increased overreporting bias relative to undecomposed questions. In addition, undecomposed questions with a 1‐week reference period led to increased overreporting bias in comparison to undecomposed/6‐month questions. Results are consistent with a category split estimation model in which smaller categories are predicted to lead to overreporting, and larger categories to underreporting. Decomposition is not recommended for gaining retrospective reports of non‐distinctive, frequent events. Copyright © 2000 John Wiley & Sons, Ltd.     

Male HIV-1 transgenic rats show reduced cocaine-maintained lever-pressing compared to F344 wildtype rats despite similar baseline locomotion

The HIV-1 transgenic (Tg) rat model is valuable for understanding HIV-associated neurocognitive disorders (HAND) and accompanying substance use and misuse. Tg and F344/NHsd wildtype (WT) rats were allowed to self-administer intrajugular cocaine. For the first 7 sessions, neither genotype self-administered cocaine (0.1 mg/kg/infusion) on a fixed ratio 1 schedule. We thus implemented a lever–cocaine “autoshaping” session followed by a series of manipulations changing dose and reinforcement schedule. Tg rats self-administered much less cocaine than WT rats throughout the study. Of 8 Tg rats, 5 modestly increased self-administration from sessions 36–50. Of those, only 3 showed a lever discrimination. Of 10 WT rats, 8 acquired robust self-administration by session 19; all WT rats self-administered cocaine by the end of the study. WT and Tg rats had similar baseline locomotor activity in the self-administration chamber suggesting that the low levels of cocaine intake in the Tg rats did not reflect a nonspecific motor impairment in this rat strain. Concomitant measurement of activity with self-administration revealed activity increases that followed increased cocaine intake. That relation held in Tg rats. Therefore, the present study provides evidence that HIV-1 Tg rats are less sensitive to the reinforcing effects of cocaine than their F344 WT counterparts.     

Combining whole-school and targeted programs for the reduction of bullying victimization: A randomized,effectiveness trial

Despite the extensive evaluation of school-based interventions for bullying, victimization remains a significant problem in schools. Bullying victimization is significantly predicted by contextual (school-related) factors. As a consequence whole-school programs have been commonly used to prevent and reduce bullying victimization. Evidence also points to individual risk factors (such as emotional distress) in predicting victimization, yet programs to prevent bullying victimization by changing these individual risks are far less developed. Few studies have approximated “real-world” implementation conditions in their trials. The current effectiveness trial evaluated the combination of a whole-school program designed to prevent bullying perpetration and victimization together with a targeted intervention for at-risk students, teaching them individual and dyadic strategies to reduce their anxiety and manage victimization, allowing schools some latitude to implement programs as they typically would. Students from Grades 3 and 4 (N = 8,732) across 135 schools were randomly assigned to one of four conditions: combined intervention; whole-school intervention only; individual intervention only; and care as usual. Victimization decreased significantly and similarly across all four conditions at 12 and 24 months following baseline. Similar reductions and failure to discriminate conditions were found on other key constructs: anxiety; bullying perpetration; and depression. Possible reasons for the failure to demonstrate victimization prevention differences and lessons learned from this large, effectiveness trial are considered.     

The Family Resilience Inventory: A Culturally Grounded Measure of Current and Family-of-Origin Protective Processes in Native American Families

The purpose of this article is to introduce the Family Resilience Inventory (FRI) and present findings on initial efforts to validate this measure. The FRI is designed to assess family resilience in one's current family and in one's family of origin, enabling the assessment of family protective factors across these generations. The development of the FRI was the result of many years of ethnographic research with Southeastern Native American tribes; yet, we believe that this scale is applicable to families of various backgrounds. Items for the FRI were derived directly from thematic analysis of qualitative data with 436 participants, resulting in two 20-item scales. Due to missing data, eight cases were removed from the 127 participants across two tribes, resulting in an analytic sample size of 119. Conceptually, the FRI is comprised of two factors or scales measuring distinct dimensions of family resilience (i.e., resilience in one's current family and resilience in one's family of origin). The results of the confirmatory factor analysis supported the hypothesized two-factor structure (X²(644) = 814.14, p = .03, X²/df = 1.10, RMSEA = .03, CFI = .97, TLI = .96). Both the subscales and the total FRI scale (α = .92) demonstrated excellent reliability. The results also provided preliminary evidence of convergent and discriminant validity. This measure fills a gap in the absence of community-based, culturally grounded, and empirical measures of family resilience. The examination of family resilience, which may occur across generations, is an exciting new contribution of the FRI.     

Power,identity, and belonging: A mixed-methods study of the processes shaping perceptions of EU integration in a prospective member state

What is at stake, psychologically, when a nation considers joining a supranational body such as the European Union? This article addresses this question from the perspective of power, identity, and belonging vis-à-vis superordinate groups. Taking a mixed-methods approach, using focus group (N = 67) and survey (N = 1,192) data, we explore the psychosocial dynamics that shape perceptions of European Union (EU) integration in a prospective member state, Serbia. Findings from the qualitative study highlighted the role of power imbalances in triggering concerns of compatibility in the present, and in shaping the expected consequences for national identity continuity in an EU future. The survey functioned to explore these relationships further, enabling the testing of two moderated mediation models. The first showed that perceptions of national powerlessness predicted lower perceptions that Serbia was representative of Europe, and this was associated with weaker identification as European. In the second model, perceptions of the EU as a hierarchy-enhancing union predicted heightened fears of Serbian identity discontinuity in an EU future, which in turn had downstream consequences for support for working toward EU accession. Both indirect pathways were stronger among high national identifiers, yielding insight into when national and supranational identification can work in harmony. This mixed-methods study sheds light on the importance of social psychological processes concerning hierarchy and groups in understanding citizens’ attitudes toward prospective large-scale political change.     

The use of mixed modeling to evaluate the impact of treatment integrity on learning

Treatment integrity, or the degree to which an intervention is implemented as intended, is a critical feature of skill acquisition tasks. Single‐case design consistently demonstrates that low treatment integrity slows or inhibits learning, but the relative impact of different types of instructional errors, or the presence of multiple errors, is less clear. The present study utilized a multilevel modeling approach to evaluate the impact of type of error (omission versus omission and commission) and error component (reinforcer delivery versus feedback) on learning. Findings revealed that learning outcomes worsened based on the type of error and as the complexity of errors increased; more specifically, participants performed better when only a single type of error occurred and when only a single error component was manipulated. Additionally, individual characteristics contributed to learning outcomes, highlighting the use of multilevel modeling as a helpful tool to supplement single‐case design. The differential impact of integrity errors on learning may be due to timing of errors (i.e., commission errors more likely to occur early in learning) or how errors affect reinforcement schedule versus discriminative control.     

Differential Relationships of Light and Darker Forms of Humor with Mindfulness

This study proposes two links between facets of mindfulness and different forms of humor: First, the common benevolence should link mindfulness positively to light forms of humor and negatively to darker forms of humor. Second, similar cognitive mechanisms should underlie both mindfulness and humor ability (humor detection, comprehension, and production). Third, both are malleable, and we hypothesize that fostering humor and mindfulness may mutually influence each other, leading to innovative and practical interventions for settings such as the workplace. In three studies, the relationship of humor and mindfulness as outlined in the Humor Mindfulness Relationship Model was investigated. In Studies 1 and 2, the relationship of different forms of humor and mindfulness was investigated in a sample of health care professionals and a broad online sample. In Study 3, the effect of a mindfulness intervention on humor as a character strength was investigated, giving preliminary insights into the mutual malleability of both. Results confirmed the positive relationship among light forms of humor and mindfulness as well as negative relationships of darker forms of humor with mindfulness. The mindfulness intervention fostered humor as a character strength. These results indicate that humor and mindfulness may be fruitfully combined in positive interventions as well as in the vocational setting. Moreover, the results suggest initial evidence for the Humor Mindfulness Relationship Model.

     

A new Big Five: fundamental principles for an integrative science of personality

Despite impressive advances in recent years with respect to theory and research, personality psychology has yet to articulate clearly a comprehensive framework for understanding the whole person. In an effort to achieve that aim, the current article draws on the most promising empirical and theoretical trends in personality psychology today to articulate 5 big principles for an integrative science of the whole person. Personality is conceived as (a) an individual's unique variation on the general evolutionary design for human nature, expressed as a developing pattern of (b) dispositional traits, (c) characteristic adaptations, and (d) self-defining life narratives, complexly and differentially situated (e) in culture and social context. The 5 principles suggest a framework for integrating the Big Five model of personality traits with those self-defining features of psychological individuality constructed in response to situated social tasks and the human need to make meaning in culture.