Cognitive factors in simple reactions: a developmental study

In an exploration of factors underlying the developmental increase in the speed of simple reaction to an auditory stimulus, two experiments were undertaken, with subjects aged 4, 10, and 20. The first experiment demonstrated that provision of visual feedback caused improvement for younger subjects but not for adults, whereas neither practice nor variable feedback caused any differential change. The second experiment was a simulated game where visual feedback was contingent on a "hit" on the previous trial. Following a hit the target moved faster, following a miss, slower. Practice caused a considerable improvement for the 4-year old subjects, but not for the older subjects. The nature it or miss feedback on the previous trial had powerful effects on the simple reaction times. For all subjects, a miss resulted in a subsequent substantial increase in speed on the next trial. Following a hit, the adults were unaffected, but the youngest subjects were substantially slower. The results are interpreted in terms of inappropriate relaxation following a hit for the 4-year old subjects, with active strategic behavior by the adults, following a miss. It is concluded that one variable (incentive provided by a miss) affects simple reaction for all ages, that two (disincentive provided by a hit, and visual feedback) differentially affect subjects of different ages, and that a fourth (use of a "trade-off" strategy) is not available to the youngest subjects.     

Diurnal mood variation in major depressive disorder

Depression disturbs mood, but a clear picture of diurnal mood rhythms in depression has yet to emerge. This study examined variations in positive affect (PA) and negative affect (NA), two dimensions of mood that generate diurnal patterns among healthy individuals. Repeated measurements of NA and PA in daily life were obtained over 6 days from 47 depressed outpatients and 39 healthy individuals using the Experience Sampling Method. Relative to healthy individuals, depressed individuals exhibited increasing PA levels during the day with a later acrophase. In contrast, depressed persons' NA exhibited a more pronounced diurnal rhythm and was more variable from moment to moment than healthy individuals'. Ambulatory mood measurements in depression suggest distinct diurnal disturbances of positive and negative affect.     

Sexual harassment,male dominated organizations and the role of counselling psychology: The case of medical school

This paper presents evidence of sexual harassment in medical school based on a survey of students (n = 186) and lecturers (n = 100); but while 85.5% of students believe that medical educators should combat this behaviour, only 67.7% of the lecturers do so. it is argued here, that ambivalence towards sexual harassment is a psychological symptom of a male dominated culture, with long term implications for victims, perpetrators and witnesses. It is an issue which needs to be addressed both interpersonally and at an organizational level.     

Reaction times and dyslexia

Five groups of children, including two groups of dyslexics (aged 15 and 11 years), were tested on simple reaction, selective choice reaction, and lexical decision tasks. In simple reactions to a pure tone, the dyslexic children responded as quickly as their chronological age controls and significantly faster than their reading age controls. In selective choice reactions to pure tones, the dyslexic children were significantly impaired compared with their chronological age controls and no faster than their reading age controls. This speed impairment obtained even though a selective choice reaction task has only one positive response. In “by-item” analyses of lexical decisions to spoken words, the dyslexic children were significantly impaired compared even with their reading age controls. The pattern of results suggests that at least two factors contribute to slowness of dyslexic children: a general deficit reflected in slower stimulus classification speed and a linguistic deficit reflected in slower lexical access speed.     

Time perception and time perspective differences between adolescents and adults

The present experiment aimed to investigate the differences in time perception and time perspective between subjects representing two developmental stages, namely adolescence and middle adulthood. Twenty Chinese adolescents aged 15–25 and twenty Chinese adults aged 35–55 participated in the study. A time discrimination task and a time reproduction task were implemented to measure the accuracy of their time perception. The Zimbardo Time Perspective Inventory (Short-Form) was adopted to assess their time orientation. It was found that adolescents performed better than adults in both the time discrimination task and the time reproduction task. Adolescents were able to differentiate different time intervals with greater accuracy and reproduce the target duration more precisely. For the time reproduction task, it was also found that adults tended to overestimate the duration of the target stimuli while adolescents were more likely to underestimate it. As regards time perspective, adults were more future-oriented than adolescents, whereas adolescents were more present-oriented than adults. No significant relationship was found between time perspective and time perception.     

Adult attachment styles,self‐esteem,and depressive symptoms: A comparison between postpartum and nonpostpartum women in Korea

Life stress related to child bearing has been suggested to increase the risk of maternal depression in vulnerable women who have an insecure relationship. This study examined the relationship between adult attachment security and maternal depression in postpartum women as compared to nonpostpartum women. A total of 254 Korean women were recruited from pediatric hospitals, of whom 119 were in the postpartum period. Participants completed the Relationship Questionnaire, the Beck Depression Inventory, and the Rosenberg Self‐Esteem Scale. Both preoccupied and fearful attachment styles were associated with low self‐esteem and higher levels of depressive symptoms, but a dismissing attachment style was not related to self‐esteem and depression severity. Low self‐esteem was found to mediate the relation between insecure attachment and depression severity; however, this mediating effect differed depending on the insecure attachment style. For preoccupied attachment, the role of self‐esteem as a mediator was observed only in postpartum women, not in nonpostpartum women (moderated mediation). In contrast, for fearful attachment, the mediating effects emerged in both groups. The results highlight the fact that there is a complex mechanism behind the link between interpersonal relationships and risk of maternal depression.     

Development of a Substance Abuse Consultation and Referral Service in an Academic Medical Center: Challenges, Achievements and Dissemination

Approximately 25% of US hospital beds are occupied by individuals with active substance use disorders (SUD). Acute medical hospitalization provides an opportunity to address SUDs and provide patient-centered intervention and referral for treatment. Nationally, some hospitals have developed substance abuse consultation departments to improve the care of hospitalized substance users. In this paper we describe the Addiction Psychiatry Service (APS) in a large urban hospital which provides bed-side SUD consultation, screening, intervention and referral to treatment. APS utilizes the multiple disciplines of psychology, social work and medicine to integrate substance abuse services throughout the hospital and educate future generations of medical and psychology trainees. We conclude with how the APS service is informing the development of similar programs in other academic departments within our hospital and best practice recommendations to further disseminate this service model.     

Mood reactivity to daily negative events in early adolescence: relationship to risk for psychopathology

Emotional responses to negative daily experiences in young adolescents may provide important clues to the development of psychopathology, but research is lacking. This study assessed momentary mood reactivity to daily events as a function of risk profile in a school sample, ages 11-14. High-risk (HR, n=25) and low-risk (LR, n=106) subgroups completed frequent self-reports of mood and events for 5 days. HR adolescents reported more negative events involving family and peers. Multilevel modeling results showed that negative events, especially if stressful, were associated with increased negative and decreased positive affects, with heightened responses in HR adolescents. HR adolescents with greater stress over the last 3 months showed additional increases in depressed mood following negative events. Altered reactivity to and dysfunctional appraisals of daily events may link adolescent risk profiles to later mental health problems.     

Book Reviews

There is long-standing evidence for verbal working memory impairments in both children and adults with dyslexia. By contrast, spatial memory appears largely to be unimpaired. In an attempt to distinguish between phonological and central executive accounts of the impairments in working memory, a set of phonological and spatial working memory tasks was designed to investigate the key issues in working memory, task type, task demands (static, dynamic, and updating), and task complexity. Significant differences emerged between the dyslexic and nondyslexic participants on the verbal working memory tasks employed in Experiment 1, thereby providing further evidence for continuing dyslexic impairments of working memory into adulthood. The nature of the deficits suggested a problem with the phonological loop, with there being little evidence to implicate an impairment of the central executive. Due to the difficulties associated with separating verbal working memory and phonological processing, however, performance was investigated in Experiment 2 using visuospatial measures of working memory. The results of the visuospatial tasks indicated no between-group differences in static spatial memory, which requires the short-term storage of simultaneously presented information. In almost all conditions there were no between-group differences in dynamic spatial memory that demands the recall of both location and order of stimuli presented sequentially. However, a significant impairment occurred on the dynamic task under high memory updating load, on which dyslexic adults showed nonphonological working memory deficits. In the absence of an explanation involving verbal recoding, this finding is interpreted in terms of a central executive or automaticity impairment in dyslexia.