Spatial knowledge of children with spina bifida in a virtual large-scale space

The spatial knowledge of 18 children with spina bifida and 18 healthy control children (matched according to sex, age, and verbal IQ) was investigated in a computer-simulated environment. All children had to learn a route through a virtual floor system containing 18 landmarks. Controlling for cognitive abilities, the results revealed that children with spina bifida showed impaired route knowledge but not an impaired landmark knowledge. Thus the results suggest that children with spina bifida are not impaired in all large-scale abilities similarly. The impairments of the children with spina bifida are more accentuated in more behaviour based measurements, which indicates a relation to the reduced mobility of the children with spina bifida.     

The item-order hypothesis reconsidered: The role of order information in free recall

According to the item-order approach of free recall, in pure short lists the free recall of unrelated items is organized according to their order of presentation in the study list. The approach was applied in the present study to experimenter-performed tasks (EPTs) and subject-performed tasks (SPTs). It claims that EPTs provide better serial order information than SPTs. Consequently, free recall of EPTs should be more organized along the presentation order of the items than the free recall of SPTs. In three experiments, some specific aspects of this approach were studied. Firstly, it was demonstrated that serial retrieval is not strongly used spontaneously and that its use is overestimated in the literature because it is usually evoked by an order reconstruction test which follows free recall testing. Secondly, a serial retrieval strategy in free recall can be encouraged by explicit instructions. Finally, the present experiments showed that a serial output strategy alone does not allow one to predict performance in free recall. The implications of these findings for the item-order approach will be discussed.     

Design-effects in prospective and retrospective memory for actions

There is ample evidence that memory for action phrases such as "open the bottle" is better in subject-performed tasks (SPTs), i.e., if the participants perform the actions, than in verbal tasks (VTs), if they only read the phrases or listen to them. It is less clear whether also the sole intention to perform the actions later, i.e., a prospective memory task (PT), improves memory compared with VTs. Inconsistent findings have been reported for within-subjects and between-subjects designs. The present study attempts to clarify the situation. In three experiments, better recall for SPTs than for PTs and for PTs than for VTs were observed if mixed lists were used. If pure lists were used, there was a PT effect but no SPT over PT advantage. The findings were discussed from the perspective of item-specific and relational information.     

Family Communication about Donor Conception: A Qualitative Study with Lesbian Parents

In this qualitative study of 10 lesbian couples who built their families through anonymous donor conception, we explore how lesbian parents experience communication about the donor conception within the family. While for these families “disclosure” of donor conception is often seen as evident, the way parents and children discuss this subject and how this is experienced by the parents themselves has not received much research attention. To meet this gap in the literature, in‐depth interviews with lesbian couples were conducted. An Interpretative Phenomenological Analysis showed that this family communication process can be understood within the broader relational context of parent–child relationships. Even though parents handled this family communication in many different ways, these were all inspired by the same motives: acting in the child's best interest and—on a more implicit level—maintaining good relations within the family. Furthermore, parents left the initiative for talking about the DC mostly to the child. Overall, parents aimed at constructing a donor conception narrative that they considered acceptable for both the children and themselves. They used different strategies, such as gradual disclosure, limiting the meaning of the donor, and justifying the donor conception. Building an acceptable donor conception narrative was sometimes challenged by influences from the social environment. In the discussion, we relate this qualitative systemic study to the broader issues of selective disclosure and bidirectionality within families.     

Mood influences on health-related judgments: Appraisal of own health versus appraisal of unhealthy behaviours

An experimental study assessed the impact of positive versus negative mood inductions on health-related judgments with respect to both self-appraisal of health (present health status, future health risks, unrealistic optimism), and appraisal of unhealthy behaviours' noxiousness compared to an untreated control condition. With respect to self-appraisal of health it was hypothesized that there should be stronger effects of negative mood than of positive mood, but that there should also be a mood by specific judgment task interaction. With respect to unhealthy behaviours' noxiousness ratings it was assumed that positive mood leads to higher noxiousness ratings than negative mood. The findings show that 23 per cent of the rating variances can be explained by the mood factor. In accord with the predictions self-appraisal of health was more negative under negative mood, but — with one exception — not more positive under positive mood than in the respective control condition. The exception relates to a measure of unrealistic optimism. Also in accord with the prediction positive mood led to higher noxiousness ratings of unhealthy behaviours than negative mood. All mood effects were independent of the respondents' sex, health locus of control and of the number of illness days during the previous year. Under an applied perspective it is discussed how negative mood may exert a double detrimental influence on health care, whereas positive mood does not lead to a ‘happy go lucky’ attitude.     

Effects of cold on human information processing: Application of a reaction time paradigm

Only a very few studies on the effects of cold on human information processing appear to exist. Therefore, the present experiment was designed to study the effects of the experimentally induced lowering of body core temperature on information processing, while applying a reaction time paradigm. Thirty healthy male volunteers performed a stimulus evaluation—response selection reaction time task after exposure to ambient temperatures of either 28 or 5°C. A 0.5°C-decrease in body core temperature resulted in a significant increase in both reaction and movement time indicating a general deteriorating effect of lowering of body core temperature on information processing. Mean reaction times were 538 ms and 549 ms for the control and the cold group, respectively (p<.05). The respective mean movement times were 298 ms and 269 ms (p<.001). Speed of stimulus evaluation was not sensitive to decreases in body core temperature. However, response complexity and body core temperature showed a significant interaction in their effect on movement time (p<.05), indicating that lowering of body core temperature is more likely to affect response-related stages of central information processing rather than stimulus evaluation. Furthermore, movement time appeared to be more sensitive to cold-induced effects on information processing as compared to reaction time. Additional correlational analyses suggest that the observed effects can be considered as independent of changes in skin temperature and experienced levels of thermal discomfort. Taken together, the results indicate that lowering of body core temperature differentially affects various stages of information processing.     

Mental rotation and handedness: differences in object-based and egocentric transformations

This study investigates mental rotation performance of right- and left-handers in object-based and egocentric mental rotation tasks using human body stimuli with an outstretched arm in front and back view. Previous literature suggests that right-handers show a slightly better mental rotation performance than left-handers. 42 participants, 14 left-handers and 28 right-handers, completed a mental rotation task with object-based and egocentric transformation of a human figure which was displayed either in front or back view. The main result was a three-way interaction between the factors “kind of transformation”, “handedness” and “view” in a way, that right-handers show significantly faster reaction times then left-handers in front view object-based transformations because of the additional in-depth rotation for front view stimuli. This difference disappeared in egocentric tasks due to the modification of onés own perspective to solve the task. The results of this study show that right-handers not generally outperform left-handers in mental rotation tasks but only if more cognitive resources are needed.     

Medical Students’ Gender Awareness

Gender awareness in medicine consists of two attitudinal components: gender sensitivity and gender-role ideology. In this article, the development of a scale to measure these attitudes in Dutch medical students is described. After a pilot study and a feasibility study, 393 medical students in The Netherlands responded to a preliminary instrument consisting of 82 items (response rate 61.3%). Reliability and validity were established. A gender awareness scale containing a gender sensitivity subscale (14 items), and gender stereotypes towards patients (11 items) as well as towards doctors (7 items) was developed. The instrument may be used for research purposes to evaluate gender awareness raising courses.