OPTIMAL TIME OF DAY AND THE MAGNITUDE OF AGE DIFFERENCES IN MEMORY

Abstract— Across two studies comparing younger and older adults, age differences in optimal performance periods were identified (Study 1), and then shown to be an important determinant of memory differences (Study 2). A norming study showed that while most younger adults were Evening or Neutral types, as determined by a standard questionnaire, the vast majority of older adults were Morning types. A second study compared the recognition performance of younger and older adults tested in the morning or in the late afternoon. Substantial age differences were found in the late afternoon, when younger but not older adults were at their optimal times. However, no age differences in memory performance were found in the morning, when older but not younger adults were at their peak period. Thus, synchrony between optimal performance periods and the time at which testing is conducted may well be a critical variable in determining group differences in intellectual performance, particularly between older and younger adults.     

The common beliefs survey III and its subscales: Discriminant validity in clinical and nonclinical subjects

Scores on irrational beliefs inventories usually correlate well with scores on questionnaires about emotional feeling states, consistent with central tenets of RET and cognitive therapy. However, without specific demonstrations of beliefs inventories' discriminant validity, it is possible that they would correlate well withany questionnaire about negative states or events, thus limiting conclusions about links between thoughts and feelings. In a test of the discriminant validity of the Common Beliefs Survey (CBS), we examined responses to a battery of questionnaires on beliefs and emotional states that had been administered to 151 subjects drawn from samples of college students, hospital staff members, mental health center outpatients, and state hospital inpatients. Results were that the CBS shows (a) satisfactory internal consistency; (b) discriminant validity in that its subscales on self-criticism and perfectionism clearly differentiate clinical from nonclinical subjects; (c) the predicted strong correlations with questionnaires on emotional feeling states; (d) convergent validity in showing a strong correlation with another beliefs inventory; and (e) discriminant validity in correlating more strongly with the other beliefs inventory than with most of the questionnaires on feeling states. The CBS thus shows some respectable psychometric properties that justify its further refinement as a clinical instrument.Geoffrey L. Thorpe is associate professor and Director of Clinical Training in the psychology department of the University of Maine.Jefferson D. Parker is a doctoral candidate in clinical psychology at the University of Maine.ary S. Barnes received his Ph.D. in clinical psychology at the University of Maine in 1989.     

Heterosocial involvement, peer pressure for thinness, and body dissatisfaction among young adolescent girls

The purpose of this study was to examine longitudinal connections among young adolescent heterosocial involvement (i.e., mixed-sex interactions), peer pressure for thinness, and body dissatisfaction. Three years of self-report questionnaire data were collected from 88 adolescent girls as they completed 6th through 8th grades. Results indicated that the relation between heterosocial involvement and body dissatisfaction was mediated by perceived peer pressure for thinness. Within this model, heterosocial involvement was associated with greater peer pressure for thinness. In turn, peer pressure for thinness was associated with greater body dissatisfaction. Results are discussed in terms of their implications for prevention and intervention efforts aimed at girls during their middle-school years.     

Investigating the nature and time-course of the modality shift effect between vision and touch

It is well known that stimuli grab attention to their location, but do they also grab attention to their sensory modality? The modality shift effect (MSE), the observation that responding to a stimulus leads to reaction time benefits for subsequent stimuli in the same modality, suggests that this may be the case. If noninformative cue stimuli, which do not require a response, also lead to benefits for their modality, this would suggest that the effect is automatic. We investigated the time-course of the visuotactile MSE and the difference between the effects of cues and targets. In Experiment 1, when visual and tactile tasks and stimulus locations were matched, uninformative cues did not lead to reaction time benefits for targets in the same modality. However, the modality of the previous target led to a significant MSE. Only stimuli that require a response, therefore, appear to lead to reaction time benefits for their modality. In Experiment 2, increasing attention to the cue stimuli attenuated the effect of the previous target, but the cues still did not lead to a MSE. In Experiment 3, a MSE was demonstrated between successive targets, and this effect decreased with increasing intertrial intervals. Overall, these studies demonstrate how cue- and target-induced effects interact and suggest that modalities do not automatically capture attention as locations do; rather, the MSE is more similar to other task repetition effects.     

The effects of bilingualism on toddlers' executive functioning

Bilingual children have been shown to outperform monolingual children on tasks measuring executive functioning skills. This advantage is usually attributed to bilinguals’ extensive practice in exercising selective attention and cognitive flexibility during language use because both languages are active when one of them is being used. We examined whether this advantage is observed in 24-month-olds who have had much less experience in language production. A battery of executive functioning tasks and the cognitive scale of the Bayley test were administered to 63 monolingual and bilingual children. Native bilingual children performed significantly better than monolingual children on the Stroop task, with no difference between groups on the other tasks, confirming the specificity of bilingual effects to conflict tasks reported in older children. These results demonstrate that bilingual advantages in executive control emerge at an age not previously shown.     

Phonemes matter: the role of phoneme-level awareness in emergent Chinese readers

The importance of phonological awareness for learning to read may depend on the linguistic properties of a language. This study provides a careful examination of this language-specific theory by exploring the role of phoneme-level awareness in Mandarin Chinese, a language with an orthography that, at its surface, appears to require little phoneme-level insight. A sample of 71 monolingual Mandarin-speaking children completed a phonological elision task and a measure of single-character reading. In this sample, 4- and 5-year-old preschoolers were unable to complete phoneme-level deletions, whereas 6- to 8-year-old first graders were able to complete initial, final, and medial phoneme-level deletions. In this older group, performance on phoneme deletions was significantly related to reading ability even after controlling for syllable- and onset/rime-level awareness, vocabulary, and Pinyin knowledge. We believe that these results reopen the question of the role of phonological awareness in reading in Chinese and, more generally, the nature of the mechanisms underlying this relationship.     

WORKPLACE SOCIAL SUPPORT AND WORK-FAMILY CONFLICT: A META-ANALYSIS CLARIFYING THE INFLUENCE OF GENERAL AND WORK-FAMILY-SPECIFIC SUPERVISOR AND ORGANIZATIONAL SUPPORT

This article uses meta-analysis to develop a model integrating research on relationships between employee perceptions of general and work-family-specific supervisor and organizational support and work-family conflict. Drawing on 115 samples from 85 studies comprising 72,507 employees, we compared the relative influence of 4 types of workplace social support to work-family conflict: perceived organizational support (POS); supervisor support; perceived organizational work-family support, also known as family-supportive organizational perceptions (FSOP); and supervisor work-family support. Results show work-family-specific constructs of supervisor support and organization support are more strongly related to work-family conflict than general supervisor support and organization support, respectively. We then test a mediation model assessing the effects of all measures at once and show positive perceptions of general and work-family-specific supervisor indirectly relate to work-family conflict via organizational work-family support. These results demonstrate that work-family-specific support plays a central role in individuals' work-family conflict experiences.     

Gender Versus Gender Role in Attributions of Blame for a Sexual Assault1

To examine whether gender differences in attributions of blame for a sexual assault are a result of gender differences in identification with members of their own gender or identification with gender roles (men identifying with the powerful assailant and women with the less powerful victim), women (n = 177) and men (n = 128) made attributions of blame for an assault in which the assailant's gender and the victim's gender were factorially manipulated. Regardless of the gender of the assailant and victim, women identified more with the victim, while men identified more with the assailant. Consistent with a modified defensive attribution hypothesis, women blamed the assailant more than did men; however, no significant effects were found for victim blame.     

A fugue in four voices: sounding themes and variations on the reflecting team

In this account of an on-going reflecting team, a group of 4 therapists describe how they preserve multiple perspectives, yet join their voices to create coherent, meaningful reflections. This reflecting approach emphasizes developing a theme and creating variations on this theme, in a manner resembling a musical fugue. In addition, the practicalities of creating and sustaining a reflecting team in a private practice context are described.