Evaluating Environmental Arrangement as Setting Events: Review and Implications for Measurement

Environmental arrangement alters the physical, social, or programmatic aspects of classrooms to increase task engagement, facilitate prosocial behaviors, and reduce or prevent the challenging behaviors of children and youth. Research shows specific arrangements can affect student engagement and deportment, but this literature is not well integrated theoretically or empirically with other effective behavior change tactics. This article proposes that some environmental arrangements may serve as setting events for child behavior change. Setting events and environmental arrangement were defined and critically outlined. A total of 43 physical environmental arrangement articles were reviewed as to the specific type of arrangement and research methodology. Several methodological problems (e.g., lack of measurement or control of antecedents, consequences, or environmental arrangements, manipulation of more than one environmental arrangement) precluded conclusions about the setting event function of environmental arrangements. Suggestions for future research on setting events and environmental arrangements are proposed.     

Neuropsychological changes in children with cancer: The treatment of missing data in longitudinal studies

Researchers conducting longitudinal studies with children or adults are inevitably confronted with problems of attrition and missing data. Missing data in longitudinal studies is frequently handled by excluding from analyses those cases for whom data are incomplete. This approach to missing data is not optimal. On the one hand, if data are missing at random, then dropping incomplete cases ignores information collected on those cases that could be used to improve estimates of population parameters (e.g., means, variances, covariances, and growth rates) and improve the power of significance tests of statistical hypotheses. On the other hand, if data are not missing at random, then dropping incomplete cases leads to biased parameter estimates and hypothesis tests that may be internally and externally invalid. This study uses three years of follow-up data from a longitudinal investigation of neuropsychological outcomes of cancer in children to demonstrate the problems presented by missing data in repeated measures designs and some solutions. In evaluating potential biasing effects of attrition, the study extends previous research on neuropsychological outcomes in pediatric cancer by inclusion of patients whose disease had relapsed, and by comparison of surviving and nonsurviving patients. Although the data presented have specific relevance to the study of neuropsychological outcome in pediatric cancer, the problems of missing data and the solutions presented are relevant to a wide variety of diseases and conditions of interest to researchers in child and adult neuropsychology.     

Social skill in third and sixth grade children: A moderator of lifetime stressful life events and behavior problems?

We investigated relationships among stressful lifetime life events, social skill, and behavior problems in children. Participants were 159 third graders, 138 sixth graders, and their mothers. Mothers reported on their children's life events, social skill, and behavior problems. Children self-reported on their social skill and behavior problems. Increased numbers of stressful life events significantly predicted increased behavior problems in third and sixth graders. Increased social skill significantly predicted decreased behavior problems in third and sixth graders. Social skill served a stress-protective role for third but not sixth graders; third graders with increased life events and better social skill had fewer behavior problems than their less socially skilled peers. Practical and theoretical implications are discussed, and suggestions for future resilience research are presented.     

Tests of sphericity of normal distributions and the analysis of repeated measures designs

The locally best invariant test statistic for testing sphericity of normal distributions is shown to be a simple function of the Box/Geisser-Greenhouse degrees of freedom correction factor in a repeated measures design. Because of this relationship it provides a more intuitively appealing test of the necessary and sufficient conditions for valid F-tests in repeated measures analysis of variance than the likelihood ratio test. The properties of the two tests are compared and tables of the critical values of the Box/Geisser-Greenhouse correction factor are given.     

Setting events controlling social verbal exchanges between students with developmental delays

The peer social verbal exchanges (social conversational units) between four developmentally delayed students were studied as a function of setting events. A single conversational unit consisted of a verbal exchange in which each individual functioned as both speaker and listener. Each unit included a three term verbal contingency. Data were collected by trained observers viewing videotapes of 20-minute sessions in which running times were burned onto the videotape. Frequencies of social conversational units were measured under two conditions. Comparisons were made between sessions in which the teacher responded only when spoken to and sessions in which the teacher was absent using a combined reversal and multiple schedule design. Results showed that peer conversational units emerged at high rates when the teacher was absent and at low or nonexistent rates when the teacher responded only when spoken to in the living room setting. The setting and audience control for peer verbal exchanges were discussed as functions possibly of either a punishing audience, establishing operations, or response deprivation.     

Exploring mechanisms that affect retrograde memory for public events in amnestic mild cognitive impairment: A longitudinal update

Here, we examined mechanisms that affect retrograde memory in amnestic mild cognitive impairment (a-MCI) as a function of longitudinal clinical outcome. 8 a-MCI who converted to Alzheimer's dementia (AD) during the subsequent 3-year follow-up (converter a-MCI) and 10 a-MCI who remained clinically stable during the same period (stable a-MCI) were compared at the baseline evaluation (i.e., when they were diagnosed as a-MCI) using a remote memory questionnaire for public events that allows disentangling the differential contribution of storage and retrieval mechanisms to performance accuracy. Results suggest that deficits in remote memory are primarily explained by impaired retrieval abilities in stable a-MCI and by impaired storage in converter-to-AD a-MCI. This distinction between retrograde amnesia due to defective trace utilisation in stable a-MCI and trace storage in converter a-MCI is consistent with the temporal unfolding of declining anterograde memory over the course of disease progression to AD.     

Reciprocal Prospective Effects of Momentary Cognitions and Affect in Daily Life and Mood Reactivity Toward Daily Events in Remitted Recurrent Depression

Major depressive disorder is a recurrent condition. Potential risk factors for future episodes are maladaptive cognitions, such as rumination and unfavorable reactivity toward negative daily events. Positive thoughts and positive daily events, in contrast, could act as a buffer against mood deterioration. The aim of the present study is to (a) examine differences in daily affect and cognitions in remitted depressed patients with a history of recurrent episodes (rMDD) and healthy controls, (b) analyze reciprocal prospective effects of momentary cognitions and affect, and (c) investigate effects of daily events on affect and cognitions in both groups. A sample of N = 102 participants underwent an ecological momentary assessment (EMA) phase of 5 consecutive days, where rMDD patients (n = 51) and healthy controls (n = 51) indicated their momentary rumination, positive thoughts, affect, and the occurrence of daily events 10 times per day. Via multilevel lag models, we found higher rumination to predict a decrease of positive affect (PA) in the rMDD group, but no effect of rumination on subsequent negative affect (NA) in either group. Higher positive thoughts predicted an increase in PA and a decrease in NA, similarly strong in both groups. Regarding daily events, rMDD patients reported a stronger increase in NA and rumination following negative daily events compared to controls, whereas an observed subsequent decrease of PA and positive thoughts was not moderated by group. Following positive daily events, rMDD patients showed a stronger increase in PA and positive thoughts and a stronger decrease in NA and rumination than controls. For interventions targeting relapse prevention, our results indicate the implementation of strategies fostering the responsiveness to positive events and the up-regulation of positive affect.     

Restraint increases both aggression and defence in female rats tested against same-sex unfamiliar conspecifics

Female rate living in groups were subjeccted to single and repeated immobllization stress (Restraint, RT). Twenty-four hours after RT, or the last RT session in the case of repeated RT, social behavior was recored in encounters with unfamilar females, matched for age and body weight. Single RT caused an increase in agonistic behavior in both its aggression and defence aspects. This was a specific effect, as other behaviors, including introductory, affiliative (Allo-Grooming), and courting items, were unifluenced by Rate The effect persisted and was even strengthened in the case of aggression, when RT was repeated once a day for 7 consecutive days. These findings, together with previous data showing a reduction in emotionality and an increase in the exploration of the physical environment following RT, suggest that in females mild stress may induce behavioral arousal, with the selective activation of specific social and non-social behavioral parameters. This contrasts with previous findings in male rats, which responded to RT with the depression of several behavioral parameters, including some of the items (aggresion, exploration) activated in females. As already found in males, in females some parameters were affected by repetition of treatment, either RT or control handing. This suggests that manipulation per se does affect social behavior. However, behavioral modifications ascribable to repeated manipulation in no way superimposed, and were clearly distinguish able from, those due to RT. © 1993 Wiley-Liss, Inc.