Stimulus and task factors as determinants of ear advantages

Two dichotic experiments are reported which dissociate stimulus and task factors in perceptual lateralization. With only trajectories of fundamental frequency as a distinguishing cue, perception of the voicing of stop consonants gives a right ear advantage. Identification of the emotional tone of a sentence of natural speech gives a left ear advantage. If such parameters as fundamental frequency variation or overall naturalness of the speech material determined the direction of an ear advantage, the reverse pattern of results would have been obtained. Hence the task appears more important than the nature of the stimulus.     

An interactive computer program for tailored testing based on the one-parameter logistic model

A program to implement tailored testing using the Rasch one-parameter logistic model is described and the problems encountered in its writing are discussed.     

Quantenphyfikalifche bemerkungen zur biologie und pfychologie

Ohne Zusammenfassung     

Symposium Introduction: Reflexivity in Life Designing Interventions

This article introduces the Symposium on Reflexivity in Life Design Interventions. Eight articles report studies of counseling processes and client operations during life design interventions as well as client feedback during subsequent Interpersonal Process Recall interviews. The Symposium concludes with comments on and discussion of the studies.     

Reflection and reflexivity during life-design interventions: Comments on Career Construction Counseling

The 8 articles in the Symposium advanced understanding of “Reflexivity in Life-Design Interventions”. This discussion highlights distinctions between reflection and reflexivity, as well as their relation to first-order and second-order change. Then the contributions of the Symposium authors are organized using four phases of narrative counseling: symbolic representation, reflective self-examination, reflexive new realizations, and revisioning career identity. The discussion concludes by organizing the diverse terms the authors used to name these four phases into a uniform format.     

Applying Bifactor Statistical Indices in the Evaluation of Psychological Measures

The purpose of this study was to apply a set of rarely reported psychometric indices that, nevertheless, are important to consider when evaluating psychological measures. All can be derived from a standardized loading matrix in a confirmatory bifactor model: omega reliability coefficients, factor determinacy, construct replicability, explained common variance, and percentage of uncontaminated correlations. We calculated these indices and extended the findings of 50 recent bifactor model estimation studies published in psychopathology, personality, and assessment journals. These bifactor derived indices (most not presented in the articles) provided a clearer and more complete picture of the psychometric properties of the assessment instruments. We reached 2 firm conclusions. First, although all measures had been tagged “multidimensional,” unit-weighted total scores overwhelmingly reflected variance due to a single latent variable. Second, unit-weighted subscale scores often have ambiguous interpretations because their variance mostly reflects the general, not the specific, trait. Finally, we review the implications of our evaluations and consider the limits of inferences drawn from a bifactor modeling approach.     

Evaluation of multiple schedules with naturally occurring and therapist‐arranged discriminative stimuli following functional communication training

Many studies have shown that (a) functional communication training (FCT) is effective for reducing problem behavior, and (b) multiple schedules can facilitate reinforcer schedule thinning during FCT. Most studies tha have used multiple schedules with FCT have included therapist‐arranged stimuli (e.g., colored cards) as the discriminative stimuli (S^Ds), but recently, researchers have evaluated similar multiple‐schedule training procedures with naturally occurring S^Ds (e.g., overt therapist behavior). The purposes of the current study were to compare the effects of arranged and naturally occurring S^Ds directly during (a) acquisition of discriminated functional communication responses (FCRs) and (b) generalization of discriminated FCRs when we introduced the multiple schedules in novel contexts in which the naturally occurring stimuli were either relatively easy or difficult to discriminate. Results showed that (a) 2 of 3 participants acquired discriminated responding of the FCR more rapidly with arranged than with naturally occurring stimuli, (b) 2 of 3 participants showed resurgence of problem behavior , and (c) 2 of 3 participants showed greater generalization of discriminated responding to novel contexts with arranged stimuli than with naturally occurring stimuli. We discuss these results relative to the conditions under which naturally occurring and arranged S^Ds may promote rapid and generalized treatment gains.