Anxiety-related differences in affective categorizations of lexical stimuli

Effects of emotional valence on attention have been shown to occur even when stimuli are presented outside awareness. The impact of negative valence on stimulus processing has been demonstrated to be particularly salient in anxiety. Therefore, it has been hypothesized that compared to nonanxious individuals, anxious individuals have an enhanced ability to detect the valence of negative stimuli. However, it remains unclear whether anxious individuals are better at identifying the valence of threatening stimuli or, rather, more likely to label ambiguous stimuli as threatening. To investigate these hypotheses, high and low anxious participants categorized lexical stimuli as "safe" or "dangerous." Stimuli were presented at durations that allowed for both conscious (unmasked) and nonconscious (masked) processing. Results show that on masked trials, anxious individuals evidenced an enhanced ability to correctly classify threatening information, whereas nonanxious participants demonstrated an enhanced ability to correctly classify neutral or positive information. Signal detection analyses indicated results were explained by a response bias, whereby anxious individuals were more likely than nonanxious individuals to categorize masked words as threatening and nonanxious individuals were more likely to categorize masked words as nonthreatening. No group differences for nonword stimuli emerged, suggesting that anxiety-related response bias tendencies are activated only after detection of a weak semantic signal.     

Network Knowledge Organization: Do Knowledge Structures for Sexual and Emotional Information Reflect Gender or Sexual Orientation?

Network theory conceptualizes the organizationof semantic information as nodes within a net-likestructure. Links within the network representassociations among knowledge structures or concepts andhave been viewed as forming the basis of humansemantic memory (Quillian, 1962). Network models haverecently been employed in emotion theory (Bower, 1981;Lang, 1984) and in research in human sexuality (Geer, 1996; Rabalais & Geer, 1996; Smith,Eggleston, Gerrard, & Gibbons, 1996). As a result ofthat research, stable gender differences in theorganization of knowledge for sexual and emotionalinformation have begun to be identified (see Geer &Manguno-Mire, 1996, for a review). These differences inknowledge organization have been shown to map well ontoexisting research demonstrating gender differences in sexual attitudes, fantasies, and behavior(Geer & Manguno-Mire). The present study employs thePathfinder computer algorithm (Schvaneveldt, 1990) tocompare the cognitive associative networks of heterosexual men and women and gay men andlesbians. Ninety homosexuals (49 gay men and 41lesbians) and 95 heterosexuals (48 men and 47women)rated all pair-wise combinations of 16 wordsrelevant to sexuality and emotion. The sample was predominantlyCaucasian (90%). Four percent of participants wereAfrican-American, 3% were Hispanic American, 1% wereAsian American. Analysis of our dependent variable(number of links on relevant concepts) revealed genderand sexual orientation differences in the total numberof links in associative networks, the number of linkswithin relevant sexual and emotional word clusters, between relevant word clusters, and onindividual words. Results are interpreted in light ofrelevant theories of gender and sexualorientation.     

Predictors of Partner Engagement in PTSD Treatment

A telephone survey was conducted to identify predictors of treatment engagement in 83 cohabitating female partners of 83 Vietnam theater veterans with combat-related post-traumatic stress disorder (PTSD). The survey assessed veterans for their trauma history and PTSD symptoms. Partners were assessed for caregiver burden, patient–partner involvement, PTSD treatment engagement, self-efficacy relating to PTSD, beliefs about benefits of PTSD treatment, and PTSD treatment barriers. Significant predictors of partner PTSD treatment engagement were the couple’s income, patient–partner involvement, and partner caregiver burden. These findings have implications for family interventions that may increase partner PTSD treatment engagement and improve PTSD treatment outcome.     

Are release recommendations for NGRI acquittees informed by relevant data?

We conducted a retrospective review of factors involved in clinical recommendations for release of patients adjudicated not guilty by reason of insanity (NGRI). Medical records from 91 patients in a maximum security forensic hospital who participated in a formal hearing process to determine suitability for release were reviewed. The purpose of the study was twofold: (1) to examine the process involved in day to day clinical decision-making regarding release from a maximum security forensic hospital and (2) to determine what factors in a patient's clinical and legal history were related to recommendation decisions. Multivariate statistical methods revealed that among the clinical, demographic, and legal information available to clinicians at the time a formal release recommendation was made two factors emerged that were significantly related to release recommendations: PCL-R score and the age at which the patient committed his first criminal offense. Patients with high levels of psychopathy and those who engaged in criminal behavior at a younger age were less likely to be recommended for release from a maximum security forensic hospital.