Group-based self-evaluation outside of the laboratory: effects of global versus contextual status

An event-contingent diary methodology was used to study the impact of intergroup and intragroup factors on self-evaluations in naturally occurring groups. Participants reported their contextual group status, group identification, and self-evaluations each time they self-categorized as a group member throughout a 1-week period. Indicators of global group status, interdependence, and permeability of group boundaries also were obtained. Multilevel modeling revealed that contextual status and global status interacted to predict self-evaluations. Contextual status had a stronger relationship with self-evaluations for members of global low-status groups than for members of high-status groups. Analyses of intragroup factors revealed that greater group interdependence but not permeability of group boundaries also was associated with higher self-evaluations. The effects of both contextual status and group interdependence were mediated by group identification.     

Monitoring syllable boundaries during speech production

This study investigated the encoding of syllable boundary information during speech production in Dutch. Based on Levelt's model of phonological encoding, we hypothesized segments and syllable boundaries to be encoded in an incremental way. In a self-monitoring experiment, decisions about the syllable affiliation (first or second syllable) of a pre-specified consonant, which was the third phoneme in a word, were required (e.g., ka.No 'canoe' vs. kaN.sel 'pulpit'; capital letters indicate pivotal consonants, dots mark syllable boundaries). First syllable responses were faster than second syllable responses, indicating the incremental nature of segmental encoding and syllabification during speech production planning. The results of the experiment are discussed in the context of Levelt's model of phonological encoding.     

How many IRT parameters does it take to model psychopathology items?

The authors compared the fit of the 2- and 3-parameter logistic models (2PLM; 3PLM) on 15 unidimensional factor scales derived from the Minnesota Multiphasic Personality Inventory--Adolescent item pool. Log-likelihood chi-square deviance tests indicated that a 3PLM provided an improved fit. However, residual statistics indicated that the difference in fit between the 2 models was negligible. An unexpected finding was that from 10% to 30% of the items had substantial lower asymptote parameters (c > or = .10) when the scales were scored in the pathology or nonpathology directions. The authors argue that the large lower asymptote parameters are attributable to item-content ambiguity possibly caused by item-level multidimensionality. These findings suggest that the direction of scoring can critically affect an item response theory analysis.