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Results for “Perceptual Defense”

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At least 19 recordsLinked to original sources
PubMed1996

Predicting perceptual defense.

Perceptual defense as a phenomenon was proposed by McGinnies in 1949. His findings were, in main, replicated by York, et al. in 1984 and extended by Perroncel, et al. in 1990. The present purpose was to assess whether four independent variables, one related to emotional arousal (GSR) and three, related to connotative word meaning (Evaluative, Potency, and Activity scores from Semantic Differential words used in the Perroncel, et al. study), could predict the perceptual defense phenomenon. The multiple correlation coefficient (R) was .19; however, the percent variance accounted for by the four independent variables was 3%. Clearly, further research is necessary to specify what factors predict the perceptual defense effect.

Adult↗
PubMed1975

Prediction of perceptual defense from experimental stress and susceptibility to stress as indicated by thematic apperception.

The present investigation tested the hypothesis advanced by J. Inglis (1961) that perceptual defense and perceptual vigilance result from an interaction between personality differences and degrees of experimental stress. The design, which controlled for questionable procedures used in previous studies, utilized 32 introverts and 32 extraverts, half male and half female, in an experiment with a visual recognition-task. Results indicated that under low-stress conditions introverts and extraverts identified by their response to a thematic apperception task react to threatening stimuli with perceptual defense and perceptual vigilance, respectively. Under high-stress conditions, type of avoidance activity reverses; extraverts react with perceptual defense and introverts with perceptual vigilance. It was suggested that, when both personality and stress variables are controlled, results of the perceptual defense paradigm are predictable and consistent, in support of Inglis' hypothesis.

Anxiety↗
PubMed1984

Perceptual defense, a replication.

McGinnies ' (1949) study on perceptual defense was replicated. No significant results were noted for galvanic skin responses. Threshold differences were significant; taboo words had higher thresholds than neutral words. Possibly "emotionality" and "threat" may require separate operational definitions if the effect, "perceptual defense," is to be clearly demonstrated.

Emotions↗
PubMed1994

Perceptual defense and vulnerability to postpartum depression.

The objective was to assess the relationship between vulnerability to postpartum depression and perceptual defense evoked by tachistoscopic stimuli alluding to perinatal themes in pregnant women. Tachistoscopic stimuli have been shown to produce different thresholds of conscious identification according to their emotional content: a phenomenon termed perceptual defense. A total of 412 women in their 3rd of 4th month of pregnancy were asked to identify 14 pictures and 18 verbal stimuli shown for initially very brief but increasing durations. Presentation times required for a correct identification were measured. Depression was assessed, at 2 and 6 months postdelivery, by the Hamilton Depression Rating Scale: 53 women were defined as depressed by a score > or = 15. Discriminant analysis showed that the women who would become depressed 7 to 11 months later were slower than the nondepressed to identify 5 stimuli alluding to pregnancy, sexuality or a father image. Particular attitudes towards the themes of being pregnant, of sexuality and of the father could be components of a psychological predisposition to the development of depressed mood in the postpartum.

Adult↗
PubMed1980

Evidence for perceptual defense using a lexical decision task.

In a tachistoscopic experiment employing a lexical-decision task, it was demonstrated that emotional ("taboo") words are not responded to as quickly or as accurately as non-emotional ("neutral") words by 32 college students. The results suggest evidence for "perceptual defense" uncontaminated by response bias.

Adult↗
PubMed2003

Perceptual defense in anxiety disorders.

Prior research by MacLeod and Rutherford (1992) indicates that anxious subjects could have perceptual strategies different from nonanxious subjects. 42 verbal stimuli of six types (disease, social anxiety, panic, agoraphobia, obsessive-compulsive, and neutral) were tachistoscopically presented to three groups of subjects, aged 18 to 60 years: Panic Disorder group (n=21: 13 women and 8 men), and Obsessive-Compulsive Disorder group (n=20: 14 women and 6 men), recruited from an outpatient clinic, and a Control group (n=22: 14 women and 8 men), recruited among students and hospital staff. The times required for correct identification were generally longer for anxious subjects but quicker for stimuli specifically related to their disorder. The data could indicate a two-step perceptual strategy or two distinct ways of perceiving, usually, a generalized perceptual defense for a majority of anxiety-loaded stimuli, but also a selectively facilitated processing for stimuli specific to the disorder.

Adolescent↗
PubMed1997

Perceptual defense and vigilance to perinatal stimuli.

The presentation times (milliseconds on a computer screen followed by a masking grid) required for the correct identification of tachistoscopically presented perinatal stimuli were compared for 30 pregnant women and 25 perimenopausal women. Analysis indicated a differential facilitation or inhibition of perception in logical relation to subjects' closeness to pregnancy or menopause: pregnant women are quicker to identify stimuli related to pregnancy or babies but slower to recognize pictures of a pregnant woman with her father or mother. This supports the validity of measurements based on the theory of perceptual defense or vigilance.

Adult↗