Dichotic listening during forced-attention in a patient with left hemispherectomy

A young left-handed girl with an extensive posttraumatic lesion in the left hemisphere was tested with dichotic listening (DL) under three different attentional instructions. The major aim of the study was to evaluate a structural vs attentional explanation for dichotic listening. As both her expressive and receptive language functions were intact after the lesion, it was assumed that the right hemisphere was the language-dominant one. In the free-report condition, she was free to divert attention to and to report from both ear inputs. In the forced-right condition, she was instructed to attend to and report only from the right ear input. In the forced-left condition, she was instructed to attend to and to report only from the left-ear input. Her performance was compared with data from a previously collected sample of normal left-handed females. Analysis showed that the patient, in contrast to the normal sample, revealed a complete right-ear extinction phenomenon, irrespective of attentional instruction. Furthermore, she showed superior correct reports from the left ear, compared with those of the normal sample, also irrespective of attentional instruction. It is concluded that these results support a structural, rather than attentional explanation for the right-ear advantage (REA) typically observed in dichotic listening. The utility of validating the dichotic listening technique on patients with brain lesions is discussed.     

Neurocognitive correlates of stereotactic thalamotomy and thalamic stimulation in Parkinsonian patients

In the present paper we have reviewed five different studies that relate to neuropsychological consequences of stereotactic thalamotomy and thalamic stimulation in patients with Parkinson's disease. The neuropsychological results are in a strict sense confined to thalamotomy and thalamic stimulation, although the more general message of the importance of investigating cognitive functions before and after surgery applies to other stereotactic techniques for surgical treatment of movement disorders as well. It is argued in the paper that stereotactic thalamotomy provides a unique model for basic research on the neuropsychology of the thalamus, while in return, neuropsychological tests for cognitive dysfunction after surgery may be the most important clinical follow-up. Three general conclusions seem warranted from the data. (1) Parkinsonian patients are impaired on a range of cognitive functions, including language processing, memory, and executive functions. (2) Stereotactic thalamotomy does not further impair the patient; instead, we observed improvement on some tests, particularly verbal memory. (3) In general, there does not seem to be a laterality effect, depending on which side the thalamotomy lesion is applied. An exception to this are dichotically presented simple speech sounds and autonomic responses. In both instances, left-sided brain stimulation produced enhanced performance, while lesioning the left thalamus impaired dichotic listening performance. Finally, we present a new hypothesis for a mechanism behind the thalamotomy effect, based in part on changes in arousal thresholds.     

Dating Relationships and the Demand/Withdraw Pattern of Communication

This study examines whether afemale-demand/male-withdraw pattern occurs in datingrelationships and whether this response increases duringdiscussions of difficult topics. One hundred and eightindividuals (women = 60, men = 48) currently in a datingrelationship completed the Communication PatternsQuestionnaire, Short Form (CPQSF) regarding either adifficult or nondifficult discussion. The racialcomposition of the undergraduate student population at thetime the study was conducted was 68.8% Caucasian, 8.9%Hispanic, 8.9% International, 6.0% African American,5.6% Asian American, and 1.8% Native American (data on socioeconomic status were unavailable).Results show that dating couples do employ apredominantly female-demand/male-withdraw pattern, whichincreases in response to difficult discussions. However, this study also found that many dating couplesemployed male-demand/female-withdraw or equaldemand/withdraw patterns. Post hoc tests also showedthat couples exhibiting eitherfemale-demand/male-withdraw or male-demand/female-withdraw patterns weremore ingrained in specific negative behavior patterns,employed more demand/withdraw behaviors, and exhibitedless positive behaviors than couples with an equal demand/withdraw pattern.     

Research Quality: Critique of Quantitative Articles in the Journal of Counseling & Development

The purpose of this study was to examine the quality of quantitative articles published in the Journal of Counseling & Development. Quality concerns arose in regard to omissions of psychometric information of instruments, effect sizes, and statistical power. Type VI and II errors were found. Strengths included stated research questions and appropriateness of analyses. Implications of these results are provided.     

Confirming Gender Stereotypes: A Social Role Perspective

In this research we examined whether emotional vulnerability leads women and men to confirm gender stereotypes. Emotional vulnerability is a state where one is open to having one's feelings hurt or to experiencing rejection. Drawing on the tenets of social role theory and research related to normative expectations, we propose that emotional vulnerability leads to stereotype confirmation, as normative expectations are less risky and easier to enact than nonnormative behavior. Fifty-nine dating couples were randomly assigned to a high emotional vulnerability or low emotional vulnerability discussion with their partners. When the degree of emotional vulnerability was high men confirmed gender-stereotypes. Women's behavior, on the other hand, was not significantly affected by condition. We discuss these findings in terms of the domain in which gender-typed behaviors occur and the social pressures to act in accordance with gender norms.     

The Time Course of Verb Processing in Dutch Sentences

The verb has traditionally been characterized as the central element in a sentence. Nevertheless, the exact role of the verb during the actual ongoing comprehension of a sentence as it unfolds in time remains largely unknown. This paper reports the results of two Cross-Modal Lexical Priming (CMLP) experiments detailing the pattern of verb priming during on-line processing of Dutch sentences. Results are contrasted with data from a third CMLP experiment on priming of nouns in similar sentences. It is demonstrated that the meaning of a matrix verb remains active throughout the entire matrix clause, while this is not the case for the meaning of a subject head noun. Activation of the meaning of the verb only dissipates upon encountering a clear signal as to the start of a new clause.     

The role of the left and right thalamus in language asymmetry: dichotic listening in Parkinson patients undergoing stereotactic thalamotomy

Fourteen patients with Parkinson's disease (rigidity and unilateral tremor as main symptoms) were treated with stereotactic thalamotomy. The operation was performed in either the left or right ventrolateral thalamus, depending on which hand (or foot) was most affected with tremor. Nine patients were operated on the left side and four on the right side. All patients were tested for asymmetry of language functioning with dichotic presentations of consonant-vowel (CV) syllables. The patients had to indicate which of the two syllables he/she heard on each trial. Dichotic listening was performed before and after the operation, as well as during electrical stimulation of the VL nucleus just before the lesion was carried out. The results revealed essentially three things: an overall reduced right ear advantage (REA) in the patient group compared to what is known from studies of healthy individuals; an increase in REA during left-sided stimulations; and a marked reduction in REA after left-sided lesions. It is concluded that the present data support the notion put forward by Ojemann (e.g., 1975) of a lateralized activating gating mechanism in the left VL nucleus that gates access for language information to the appropriate cortical areas. The gating mechanism seems to be activated by stimulation, and deactivated after lesions. Dichotic listening may thus be a heuristic instrument in assessment of language functions in Parkinson patients.     

Avoidance of Counseling: Psychological Factors That Inhibit Seeking Help

How do counselors reach out to individuals who are reluctant to seek counseling services? To answer this question, the authors examined the research on the psychological help‐seeking barriers from counseling, clinical and social psychology, as well as social work and psychiatry. Specific avoidance factors that have been identified in the mental health literature; important variations in the setting, problem type, demographics, and cultural characteristics that can influence the degree to which avoidance factors affect professional help‐seeking decisions; and suggestions for overcoming these avoidance factors are discussed.