Multidimensional Personality Questionnaire profiles of veterans with traumatic combat exposure: externalizing and internalizing subtypes

This study used the Multidimensional Personality Questionnaire (MPQ; A. Tellegen, in press) to identify personality-based subtypes of posttraumatic response. Cluster analyses of MPQs completed by combat veterans revealed subgroups that differed on measures relating to the externalization versus internalization of distress. The MPQ profile of the externalizing cluster was defined by low Constraint and Harmavoidance coupled with high Alienation and Aggression. Individuals in this cluster also had histories of delinquency and high rates of substance-related disorder. In comparison, the MPQ profile of the internalizing cluster was characterized by lower Positive Emotionality, Alienation, and Aggression and higher Constraint, and individuals in this cluster showed high rates of depressive disorder. These findings suggest that dispositions toward externalizing versus internalizing psychopathology may account for heterogeneity in the expression of posttraumatic responses, including patterns of comorbidity.     

Forbidden knowledge

This case is part of a series of case studies used as an exercise within a program on research ethics education. The case involves research on genetic birth defects in a culturally distinct, closed religious community in which elders speak for the community. The case raises ethical issues of informed consent in such a setting; of collaboration with the community; of conflicts between the researchers’ responsibilities to the community as a whole and to individual subjects; of the impact of the researcher’s findings on the practices and values of the community and issues regarding how the researchers share findings with subjects and how the findings are stored.     

Examining the locus of age effects on complex span tasks

To investigate the locus of age effects on complex span tasks, the authors evaluated the contributions of working memory functions and processing speed. Age differences were found in measures of storage capacity, language processing speed, and lower level speed. Statistically controlling for each of these in hierarchical regressions substantially reduced, but did not eliminate, the complex span age effect. Accounting for lower level speed and storage, however, removed essentially the entire age effect, suggesting that both functions play important and independent roles. Additional evidence for the role of storage capacity was the absence of complex span age differences with span size calibrated to individual word span performance. Explanations for age differences based on inhibition and concurrent task performamce were not supported.     

Facing Up to Hopelessness: A Dialogal Phenomenological Study

Hopelessness is a fundamental human experience, and yet is often considered evidence either of sin or of illness. This dialogal phenomenological study, based on in-depth interviews, takes a fresh look at despair as experienced by people across a variety of ages and contexts, and at the consequences and outcomes of these feelings. At the heart of despair is a sense of isolation, impotence, and an immutable future, and yet it may give rise to new purpose or a new understanding and acceptance of life with its possibilities and limitations. The therapeutic implications of this understanding of despair are discussed with a focus on how presence can be healing.     

Temporal Induction of Missing Birdsong Segments in European Starlings

Four European starlings (Sturnus vulgaris) discriminated a 300-ms segment of starling song from a 300-ms segment of budgerigar song in three contexts in a two-choice key-peck operant discrimination task. In the starling-song context, on each trial, one of the song segments was presented in the context of starling song; in the budgerigar-song context, the segments were presented in the context of budgerigar song. In the no-song context, the song segments were presented outside of a song context. On occasional unreinforced probe trials, the song segments were replaced by either white noise or silence. On noise trials in the two song contexts, but not on silent trials in the song contexts or noise trials in the no-song context, the starlings were significantly more likely to respond to the key associated with the starling song segment than to the key associated with the budgerigar song segment. This effect was especially pronounced in the starling-song context. The results indicate that noise induces perceptual restoration of missing birdsong segments in songbirds.     

Bringing order to the arbitrary: one- to two-year-olds’ recall of event sequences

Recall by children ages 16–32 months was tested on event sequences that were either arbitrarily ordered or were constrained by enabling relations. Even the youngest children reliably recalled the enabling sequences. It was not until 20 months and older that the children performed at above-chance levels on the arbitrarily ordered events.     

Effects of High-Probability Request Sequences on Preschoolers' Compliance and Disruptive Behavior

A high-probability request sequence was implemented with three preschool children with developmental delays within their classroom during typical activities. A multiple baseline design across subjects was used to evaluate the effects of the high-probability request sequence on compliant responding to low-probability requests and the occurrence of disruptive behavior. Results of the study indicate that the use of the high-probability request sequence was effective in increasing compliant responding to low-probability requests delivered by two different trainers for all children. No increases in disruptive behavior were noted as a result of using the high-probability request sequence. When the high-probability request sequence was withdrawn, compliant responding to low-probability requests was maintained for all children across time and in different settings.     

REEMERGENCE AND EXTINCTION OF SELF-INJURIOUS ESCAPE BEHAVIOR DURING STIMULUS (INSTRUCTIONAL) FADING

Based on results of a functional analysis indicating that the self-injurious behavior (SIB) of 3 individuals was maintained by negative reinforcement (escape from instructional situations), the effects of stimulus (instructional) fading were evaluated in a multiple baseline design across subjects. The rate of instructions was reduced to zero at the beginning of treatment and was gradually increased (faded in) across sessions as long as SIB remained low. However, if SIB remained high for 10 consecutive sessions, extinction was implemented until SIB decreased, at which point extinction was withdrawn and fading was resumed. Treatment was completed when the rate of instructions was the same as in baseline (two per minute), and SIB remained below 0.5 responses per minute for two consecutive sessions. Results showed that instructional fading (without extinction) virtually eliminated SIB initially, but these effects were not maintained. All 3 subjects required multiple exposures to extinction and over 150 treatment sessions in order to meet the end-of-treatment criteria. Advantages and limitations of fading procedures without an extinction component, as well as extensions of both interventions to other clinical problems, are discussed.     

Is guidance an applied science?: The role of theory in the careers guidance interview

Some of the findings of a study investigating careers officers' use of theoretical models in the careers guidance interview are discussed. Data were collected through visits to institutions offering Diploma in Careers Guidance courses, a large-scale questionnaire survey of careers officers, and semi-structured interviews and group discussions. There was evidence that in initial training, theory is used to support, rather than determine, the development of skills. Results also suggested that practising careers officers are familiar with a fairly wide range of theories, although in their interviewing they tend to apply broad principles of theory, rather than specific elements. Careers officers who trained some time ago were less familiar with theories than were those who trained more recently, and there was no support for the hypothesis that long service leads to a greater recognition of the relevance of theories generally. Familiarity with guidance and counselling theories appears to be more influential than knowledge of career theories on the way careers officers think about interviewing. Overall, the findings cast doubt on the view that careers guidance is an applied science.