The Missing Link: On Strengthening the Relationship Between Values and Attitudes

Three experiments that test whether the activation of values may result in a change in the relationship between the activated value and connected attitudes are discussed. Participants were primed with the value universalism and subsequently asked for their attitude toward organically grown food. Our results strongly suggest that values are more likely to significantly influence attitudes when the relevant value is activated and the link between the activated value and attitude is activated as well. However, merely activating a specific value is not sufficient to instigate a significant change in the relationship between a value and its related attitudes.     

Asymmetry in resting intracortical activity as a buffer to social threat

Social rejection can create powerful changes in people's brains and bodies. In the study reported here, we examined brain-based individual differences associated with buffering against cardiovascular threat responses to social rejection. Using EEG source-localization techniques, we examined differences in intracortical asymmetry. We predicted that individuals with greater left relative to right dorsolateral prefrontal activity would show a more approach-motivated response to social rejection. Eighty-four female participants were randomly assigned to one of three stressful situations: social rejection, social evaluation without rejection, or self-evaluation. Among participants assigned to the social-rejection condition, greater left relative to right prefrontal intracortical activity at baseline was associated with more adaptive cardiovascular profiles and more self-reported approach-oriented emotions. Participants in the other conditions did not show these relationships. Our data are the first to show that social context matters when attempting to link individual differences in cortical asymmetry with approach-related cardiovascular and emotional outcomes.     

Saccadic facilitation by modulation of microsaccades in natural backgrounds

Saccades move objects of interest into the center of the visual field for high-acuity visual analysis. White, Stritzke, and Gegenfurtner (Current Biology, 18, 124-128, 2008) have shown that saccadic latencies in the context of a structured background are much shorter than those with an unstructured background at equal levels of visibility. This effect has been explained by possible preactivation of the saccadic circuitry whenever a structured background acts as a mask for potential saccade targets. Here, we show that background textures modulate rates of microsaccades during visual fixation. First, after a display change, structured backgrounds induce a stronger decrease of microsaccade rates than do uniform backgrounds. Second, we demonstrate that the occurrence of a microsaccade in a critical time window can delay a subsequent saccadic response. Taken together, our findings suggest that microsaccades contribute to the saccadic facilitation effect, due to a modulation of microsaccade rates by properties of the background.     

Wanting to Be Boss and Wanting to Be Subordinate: Effects on Performance Motivation

Does dyad members' motivation to take on a high or low power position influence the dyad's performance motivation when assigned to hierarchical roles? Participants in 69 dyads (33 all‐women, 36 all‐men) indicated whether they preferred the high‐power role (owner of an art gallery) or the low power role (assistant to the owner). Power roles were then randomly assigned. The dyad's interaction during task solving was videotaped. Uninvolved coders rated performance motivation as the degree of quality of the superior's and the subordinate's task contributions and effort put into the task. Performance motivation was better if the boss preferred the high power to the low power role, irrespective of the subordinate's role preference. Leadership effectiveness is thus affected by the superior's power motivation.     

The Self-Perception Profile for Children: further evidence for its factor structure, reliability, and validity

This article presents further evidence for the psychometric qualities of the Self-Perception Profile for Children (SPPC), a widely used questionnaire for assessing self-esteem in youths. The SPPC was administered to a large sample of Dutch school children (N=1143) in order to study its factor structure, reliability (internal consistency and test–retest stability), and validity. Results showed that the hypothesized factor structure of the SPPC representing five specific domains of self-esteem (i.e. scholastic competence, social acceptance, athletic competence, physical appearance, and behavioral conduct) provided a reasonable fit for the data. Furthermore, the reliability of the scale appeared to be satisfactory with good internal consistency and test–retest stability. Finally, evidence was also obtained for the validity of the SPPC. More specifically, the scale correlated in a theoretically meaningful way with child-, parent-, and teacher-reports of psychopathology and personality. Altogether, the current findings confirm the notion that the SPPC is a reliable and valid self-report measure for assessing children's self-esteem.     

The influence of infant irritability on maternal sensitivity in a sample of very premature infants

The relationship between maternal sensitivity and infant irritability was investigated in a short‐term longitudinal study of 29 very preterm infants. Infant irritability was assessed at term with the Brazelton NBAS, the Mother and Baby Scales (MABS) and the Crying Pattern Questionnaire (CPQ). Maternal sensitivity was assessed by nurses' ratings in the neonatal care unit and at three months during mother–infant interaction observation. Cross‐lagged panel analysis indicated that neonatal irritability did not influence sensitivity at 3 months nor did maternal sensitivity in the newborn period lead to reduced irritability at 3 months. Both irritability and maternal sensitivity showed moderate stability over time (r = 0.55 and r = 0.60, respectively). It is concluded that in early infancy maternal sensitivity shows little influence on infant irritability in very preterm infants. Copyright © 2003 John Wiley & Sons, Ltd.     

A Quantitative Meta-analysis of Olfactory Dysfunction in Epilepsy

Neuropsychology Review - Olfactory dysfunction in epilepsy is well-documented in several olfactory domains. However, the clinical specificity of these deficits remains unknown. The aim of this...     

Distance cognition in virtual environmental space: Further investigations to clarify the route-angularity effect

Two experiments with 72 participants in total investigated the route-angularity effect. This effect is shown when a greater number of turns along a route increase the estimated length of this route. In this study it was shown that the route-angularity effect is likely to be a memory-based effect depending on task difficulty. The important factor seems to be how heavily memory is loaded during learning. The route-angularity effect even appears in intentional learning, when memory is loaded heavily. Under this learning condition participants know beforehand that they have to estimate distances. All experiments were conducted in a controlled virtual environment, which allows a reliable investigation of distance estimations in environmental space.     

Typical dreams: stability and gender differences

Although the variability of dream content is large, typical dream themes that occur quite often and are reported by many people can be identified (e.g., being chased, falling, flying, failing an examination, being unable to find a toilet or restroom). The present study is an investigation of the stability of the rank order of the dream themes and of gender differences in the content of dreams. The authors administered A. L. Zadra and T. A. Nielsen's (1997) Typical Dream Questionnaire to 444 participants. The findings indicated that most of the 55 dream themes occurred at least once in most of the participants' lifetimes. In addition, the correlation coefficients for the rank order of the themes were very high; that is, the relative frequencies were stable. The gender differences in the present study were in line with content analytic findings; for example, men reported dreams about physical aggression more often than did women. Overall, previous research and the present data indicate that available research results of the measurement of typical dream themes are reliable and valid. The question of the meaning of these themes or the relationship between typical dream contents and waking life experiences, however, has not yet been answered and is open to future research.     

Motor adaptation to different dynamic environments is facilitated by indicative context stimuli

When humans are exposed to external forces while performing arm movements, they adapt by compensating for these novel forces. The basis of this learning process is thought to be a neural representation that models the relation between all forces acting upon the system and the kinematic effects they produce, called inverse dynamic model (IDM). The present study investigated whether and how the predictability of a given external force affects the selection of an appropriate motor response to compensate for such force. Adult human subjects (N=32) held a handle that could rotate around the elbow joint and learned to perform goal-directed forearm flexion movements, while an external velocity-dependent negative damping force was applied that assisted forearm movement. Subjects were randomly assigned to two groups. In the associative group, the applied damping force was always associated with a specific initial position. Thus, after initial learning, the force application became predictable. In the non-associative group, where the same movements were performed, the applied force was independent of the initial position, so that no association between force and location could be formed. We found that only the associative group significantly reduced target error when damping was present. That is, the location cue aided these subjects in generating dynamic responses in the appropriate limb. Our results indicate that motor adaptation to different dynamic environments can be facilitated by indicative stimuli.