The cross-cultural generalizability of Zuckerman's alternative five-factor model of personality

The aim of this study was to analyze the cross-cultural generalizability of the Alternative five-factor model (AFFM; Zuckerman, Kuhlman, & Camac, 1988). The total sample was made up of 9,152 subjects from six countries: China, Germany, Italy, Spain, Switzerland, and the United States. The internal consistencies for all countries were generally similar to those found for the normative American sample. Factor analyses within cultures showed that the normative American structure was replicated in all cultures; however, the congruence coefficients were slightly lower in China and Italy. A similar analysis at the facet level confirmed the high cross-cultural replicability of the AFFM. Mean-level comparisons did not always show the hypothesized effects. The mean score differences across countries were very small.     

Monocular deprivation in adult mice alters visual acuity and single-unit activity

It has been discovered recently that monocular deprivation in young adult mice induces ocular dominance plasticity (ODP). This contradicts the traditional belief that ODP is restricted to a juvenile critical period. However, questions remain. ODP of young adults has been observed only using methods that are indirectly related to vision, and the plasticity of young adults appears diminished in comparison with juveniles. Therefore, we asked whether the newly discovered adult ODP broadly reflects plasticity of visual cortical function and whether it persists into full maturity. Single-unit activity is the standard physiological marker of visual cortical function. Using a more optimized protocol for recording single-units, we find evidence of adult ODP of single-units and show that it is most pronounced in deep cortical layers. Furthermore, using visual evoked potentials (VEP), we find that ODP is equally robust in young adults and mature adults and is observable after just one day of monocular deprivation. Finally, we find that monocular deprivation in adults changes spatial frequency thresholds of the VEP, decreasing the acuity of the deprived pathway and improving the acuity of the non-deprived pathway. Thus, in mice, the primary visual cortex is capable of remarkable adaptation throughout life.     

Clients’ Experiences of Disengaged Moments in Psychotherapy: A Grounded Theory Analysis

The study offers an empirically derived model of clients’ experiences of disengaged moments, defined as moments when clients withdraw, distance, or lessen their intensity of involvement with therapy-relevant material or relationships. Interpersonal Process Recall (IPR) interviews were conducted with nine psychotherapy clients of therapists with varied orientations and experience. The interviews were transcribed verbatim and subjected to qualitative analysis using grounded theory analysis (Glaser and Strauss, The discovery of grounded theory: Strategies for qualitative research, 1967) methodology. The results suggested that clients use disengagement for protection from pain, strategic retreat, relationship management, self-through-other discovery, and self-betterment. The core category across all of the experiences of disengagement relates to communicating difficulties and experimenting within the therapy relationship toward self-change. Recommendations are offered for research and practice.     

The contents of perceptual hypotheses: Evidence from rapid resumption of interrupted visual search

Observers can resume a previously interrupted visual search trial significantly more quickly than they can start a new search trial (Lleras, Rensink, & Enns, 2005). This rapid resumption of search is possible because evidence accumulated during the previous exposure, a perceptual hypothesis, can carry over to a subsequent presentation. We present four interrupted visual search experiments in which the content of the perceptual hypotheses used during visual search trials was characterized. These experiments suggest that prior to explicit target identification, observers have accumulated evidence about the locations, but not the identities, of local, task-relevant distractors, as well as preliminary evidence for the identity of the target. Our results characterize the content of perceptual search hypotheses and highlight the utility of interrupted search for studying online search processing prior to target identification.     

Preschoolers' response to maternal sadness: Relationships with maternal depression and emotional availability

Previous research has documented that children of depressed mothers are at risk for a variety of emotional/behavioral problems and impairments in mother-child interaction. Depressed mothers have been characterized as withdrawn and unavailable. The present study examined behavior of preschool children of depressed and nondepressed mothers in response to their mothers' feigned sadness. The study assessed maternal depression and maternal emotional availability to determine how these related to preschoolers' expression of empathy. Sixty-two mothers and their 3 1/2-year-olds participated in the study. Mother-child interaction was coded from four tasks: free play, eating a snack, problem solving, and sadness simulation. Children of depressed mothers were not less empathic than children of nondepressed mothers. However, the mother's mood on day of testing related to child response. Maternal emotional availability interacted with the credibility/intensity of her simulation of sadness to predict child empathy.     

Pairwise agreement of gradient directions in interactive multicriterion optimization

Statistical tests involving mean directions have in the past been limited to two- and three-dimensional settings, perhaps owing to their primary applications to such fields as geology, meteorology and related earth sciences. In the study of interactive multicriterion optimization it becomes necessary to compare gradient directions obtained from decision makers by two or more methods. Typically these direction vectors are in a higher-dimensional space. This paper provides a general procedure based on Householder transformations which is potentially suitable for any finite dimension. An illustration and comparison of the method are provided.