Individual response differences in spider phobia: Comparing phobic and non-phobic women of different reactivity levels

Abstract

In contrast to previous stress research, studies concerning phobic disorders have never systematically investigated individual response differences between phobic participants integrating numerous different response measures. The aim of this article is to clarify the existence of significant individual response differences in psychophysiological responses (e.g., heart rate, skin conductance responses (SCR), corrugator, cortisol), subjective ratings (e.g., valence, arousal), and avoidance behavior in 46 spider phobic and 44 non-phobic women when exposed to 20 phobic and 20 neutral pictures. Previous studies that did not attend to individual response differences showed that, during phobic stimulation, phobic individuals have increased psychophysiological responses (heart rate, SCR, and corrugator responses), more negative valence rating, and more subjective arousal than non-phobic individuals. These results were confirmed by our data. With regard to individual response uniqueness, 1/3–2/3 of spider-phobic women with low responsiveness in heart rate, cortisol, and avoidance behavior were indistinguishable from non-phobic women during phobic stimulation. With SCR, corrugator EMG, and subjective ratings, no individual response uniqueness was found. Based on the findings, exposure therapy might be improved by tailoring interventions to individuals with a therapeutic focus on those psychophysiological measures that show the highest individual responsivity.     

Volunteers in Disaster Response

Abstract

Terrorism directed against the United States abroad and at home during the 1990s, in conjunction with the ongoing terrorist threat and use of weapons of mass destruction, and mass casualty disasters demanded a reexamination of national security and disaster response. Strategies to confront current threats and meet population needs include increasing collaboration and cooperation among federal, state, and county agencies and voluntary organizations. The American Red Cross has implemented training to familiarize participants with terrorist threats and the characteristics of chemical, biological, radiological, nuclear, and explosive weapons and has introduced technological changes to speed up service delivery at disasters.     

Rape: A Trauma of Paralyzing Dehumanization

This study examines the pathogenic role of rape-induced peritraumatic dehumanization, and subsequent humiliation and “freezing.” A theoretical causal model linking these rape-related peritraumatic responses to symptoms is tested while considering the ways in which rape differs from other types of nonsexual trauma in relation to this particular model. Two hundred and fifty-five participants completed self-report questionnaires. Structural path analyses identified dehumanization and humiliation as highly prevalent and almost invariably predictive of a freeze response in rape; and, in turn, of elevated self-blame and post-traumatic stress disorder in its wake while concurrently showing a poor fit for this model in respect to other traumas. In addition, multivariate analysis of variance results indicated that peritraumatic, as well as post-traumatic distress, was considerably more severe among rape survivors as compared to controls.     

Waldo reveals cultural differences in return fixations

ABSTRACT

Humans routinely perform visual search towards targets to adapt to the environment. These sequences of ballistic eye movements are shaped by a combination of top–down and bottom–up factors. Recent research documented that human observers display cultural-specific fixation patterns in a range of visual processing tasks. In particular, eye movement strategies extracting information from faces clearly differs between Western Caucasian (WC) and East Asian (EA) observers. However, whether such cultural differences are also present for visual scene processing remains debated. To this aim, we recorded the eye movements of WC and EA observers while they were solving visual search problems parametrically varying in difficulty: Where’s Waldo. Both groups had a comparable familiarity with the Waldo books reaching a comparable level of accuracy in target detection. Both cultural groups also showed a comparable temporal effect on inhibition of return, with longer fixation durations when saccades were performed to a return location compared to other locations. Westerners, however, located Waldo faster than Easterners. Interestingly, this modulation of speed was likely related to differences occurring on the low-level mechanisms of spatial inhibition of return, with EA observers returning more often to previously visited locations than the WC observers. This suboptimal eye movement strategy in the Easterners might be engendered by their cultural perceptual bias consisting in? a greater use of extra-foveal information. Overall, our data point towards the existence of a subtle, but significant difference in the processing of visual scenes across observers from different cultures during active visual search.     

Using Twitter to Teach Reader‐Oriented Biblical Interpretation: “Tweading” the Gospel of Mark

Twitter offers an engaging way to introduce students to reader‐oriented interpretation of the Bible. The exercise described here introduces students to the idea that the reader has a role in the production of a text's meaning, which thus varies from reader to reader. Twitter enables us to capture the real‐time thoughts of a variety of respondents to the text of Mark as it is read aloud. Students can concretely observe the effects of particular textual moments on individual respondents as well as analyze their general interpretive stances with regard to the text as a whole. Students come to grasp that the meaning of the text varies depending on the reader, setting the stage for more complex theoretical discussion of reader‐response theory, the reader's role in the production of meaning, the adjudication of “allowed” and “disallowed” interpretations, and the appropriateness of “reader‐response” criticisms for texts that were composed to be encountered orally.     

Sensitivity of the Informant Questionnaire on Cognitive Decline: An Application of Item Response Theory

ABSTRACT

The Informant Questionnaire on Cognitive Decline (IQCODE) is a formal informant report instrument, originally developed by Jorm and Jacomb (1989 Jorm, A. F. and Jacomb, P. A. 1989. The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE): Socio-demographic correlates, reliability, validity and some norms. Psychological Medicine, 19(4): 1015–1022. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Psychological Medicine, 19(4), 1015). The goal of the present study was to evaluate the range of cognitive decline in which the IQCODE is most sensitive, using item response theory (IRT). Existing data (N = 740) from a sample of community-dwelling older adults was used for this purpose. A 2-parameter model estimating item difficulty and discrimination fit the data best. Additionally, the IQCODE provided the most psychometric information in the range of ?0.5 < θ < 1.5, with peak information obtained at approximately θ = 0.4. Based on individuals' latent score (θ) estimates, items on the IQCODE are adequate for use as a screening tool for dementia. Results of the item calibration may be useful for targeted assessment needs, such as the development of short forms.     

Maternal Response to Father-Daughter Incest: Experiences of Mothers Following Disclosure

This study explored the impact of the disclosure of sexual abuse of the daughter by the father or father figure on the mother. Data were collected from seven mothers aged between 31 and 48 years whose daughters had a history of sexual abuse by the biological father, stepfather or live-in boyfriend. The children's ages ranged between 5 and 11 years with disclosure having taken place in the last two years before data collection. Data were collected using an interview schedule. The results obtained from the thematic content analysis indicate that the mothers were traumatized by the disclosure of the sexual abuse. The most prevalent symptoms were anger, anxiety, guilty, depression, insomnia, headache and fatigue. It is recommended that mothers be provided with psychological intervention in order to assist them deal with the trauma associated with the disclosure of the father-daughter incest.     

Revisiting desirable response bias in well-being reports

Growing popular interest in positive psychology may have important implications for the measurement of well-being. Five studies tested the prediction that well-being ratings are influenced by desirability bias. In Study 1, participants (N?=?176) instructed to fake good endorsed higher well-being; those instructed to fake bad endorsed lower well-being, compared to controls. In Studies 2 and 3 (N’s?=?111, 121), control participants endorsed higher levels of well-being compared to those attached to a bogus pipeline. These differences were mediated by desirability bias. In Study 4 (N?=?417), instruction manipulations did not affect well-being levels, but presenting a desirability measure prior to well-being measures attenuated the correlations between them. In Study 5 (N?=?391), however, this order effect did not replicate. We discuss the importance of continued vigilance for desirability bias in well-being research as a ready solution to this clear problem remains elusive.     

The bidirectional relation between positive mental health and psychopathology in a longitudinal representative panel study

Background: There is accumulating evidence that positive mental health and psychopathology should be seen as separate indicators of mental health. This study contributes to this evidence by investigating the bidirectional relation between positive mental health and psychopathological symptoms over time. Methods: Positive mental health (MHC-SF) and psychopathological symptoms (BSI) were longitudinally measured in a representative adult sample (N?=?1932) on four measurement occasions in nine months. A cross-lagged panel design was applied and evaluated with a latent growth model combined with an item response theory measurement model. Results: Psychopathological symptoms were longitudinally related to positive mental health and vice versa, controlling for initial levels. The changes over time were even more important than the absolute levels of psychopathological symptoms and positive mental health, respectively. Conclusions: The results underline the need for a comprehensive perspective on mental health, incorporating both the treatment of symptoms and the enhancement of well-being.     

Temporal cue–target overlap is not essential for backward inhibition in task switching

Lag 2 repetition costs are a performance cost observed when participants return to a task after just one intervening trial of a different task, compared to returning after a longer interval (AB A vs. CB A sequences, where A, B, C are tasks). This effect is known as backward inhibition (BI) and is thought to reflect the need to overcome inhibition applied specifically to Task “A” during disengagement at trial n – 1. Druey and Hübner (2007) Druey, M. and Hübner, R. 2007. The role of temporal cue–target overlap in backward inhibition under task switching. Psychonomic Bulletin & Review, 14: 749–754. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar] have suggested that employment of such a specific inhibitory mechanism relies upon the cue and the target of the task overlapping temporally. We provide evidence across three experiments (including a direct replication attempt) that this is not the case, and that the presence of task-specific BI relies to some extent on the need to translate the cue–target relationship into working memory. Additionally, we provide evidence that faster responses in no overlap conditions are driven by low-level perceptual differences between target displays across overlap conditions. We conclude that BI is an effective sequential control mechanism, employed equally in cases of temporally overlapping and temporally separated cues and targets.