Heart rate and cardiac phase influences on visual perception.

26 undergraduates were tested with a tachistoscopic recognition task while heart rate (HR) and several other autonomic indexes were monitored. In Exp I, HR was employed as an independent variable, and stimulus presentation was contingent upon the presence of individually determined low, middle, and high HRs. Results indicate that low HR facilitated performance especially for stimuli presented at the fastest exposure. In Exp II, stimulus presentation was dependent upon cardiac phase. Findings indicate that stimulus recognition was enhanced during the cardiac P wave, but the effect was apparent only during the fastest exposure. Multiple regression analyses of the individual S's data during both experiments indicated that highly idiosyncratic patterns of physiological responses predicted perceptual performance. Results are consistent with the formulations of B. C. Lacey and J. I. Lacey (1958, 1967, 1974, etc.) and suggest that cerebral perfusion be considered as a relevant determinant of behavior. (39 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Signal-detection methods in personality and perception.

Discusses methodological problems encountered in the use of traditional threshold measures in the study of personality and perception. The threshold is shown to: (1) yield results dependent upon the psychophysical method used, (2) be arbitrary in definition, (3) be unimproved by corrections for guessing, and (4) confound the O's sensory capabilities with his criterion for reporting a given stimulus event. Methods derived from signal-detection theory are described. Studies using the logic and methods of signal-detection analysis in personality and perception research are reviewed and their implications discussed. (35 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Person perception and the Type A coronary-prone behavior pattern.

Investigated the influence of the Type A behavior pattern on attribution processes using 48 male undergraduates. It was predicted that Type A Ss would be more motivated to succeed in the Prisoner's Dilemma game than would Type B's. Increased motivation to succeed was predicted to lead Type A's to exaggerate the amount of dispositional information they would believe they had inferred from observing the behavior of a future opponent, since such a belief would lead to increased confidence about predicting the target's behavior and thus increase Ss' perceived control over the outcome. Results support the predictions when the hard-driving competitiveness dimension of the Type A pattern was used as the individual difference variable. Moreover, evaluations of future opponents in the Prisoner's Dilemma game also differed as a function of the hard-driving competitive dimension. Results are discussed in terms of a person by situation interactive model of motivational influences on attribution processes and in terms of potential interpersonal effects of the cognitive behavior of Type A individuals. (41 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heart rate variability in evaluation of the autonomic nervous system. A review

Analysis of heart rate variability is increasingly used for testing the function of the autonomic nervous system in cardiovascular disease and for the diagnosis of autonomic neuropathy. In cardiovascular disease, long-term data collection (several hours) is primarily used to describe the static activity in the different branches of the autonomic nervous system. In the diagnosis of autonomic neuropathy, short-term forced variations in heart rate are employed in order to describe the dynamic capacity of the parasympathetic nervous system. In the subsequent data-analysis several different principles may be used, and the purpose of this review is to describe these principles and their use in clinical and experimental settings.     

Enhancing target variance in personality impressions: Highlighting the person in person perception.

D. A. Kenny (1994) estimated the components of personality rating variance to be 15, 20, and 20% for target, rater, and relationship, respectively. To enhance trait variance and minimize rater variance, we designed a series of studies of personality perception in discussion groups (N?=?79, 58, and 59). After completing a Big Five questionnaire, participants met 7 times in small groups. After Meetings 1 and 7, group members rated each other. By applying the Social Relations Model (D. A. Kenny and L. La Voie, 1984) to each Big Five dimension at each point in time, we were able to evaluate 6 rating effects as well as rating validity. Among the findings were that (a) target variance was the largest component (almost 30%), whereas rater variance was small (less than 11%); (b) rating validity improved significantly with acquaintance, although target variance did not; and (c) no reciprocity was found, but projection was significant for Agreeableness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heart rate reactivity in male batterers: A second look at the evidence.

Together, the results of 3 studies examining heart rate reactivity (HRR) in male batterers do not provide strong support for the I M. Gottman et al (see record 2001-11319-004) batterer typology. All research groups found similar proportions of severely violent male batterers who show heart rate increases or decreases during a marital conflict discussion, but there was inconsistent validation of this taxonomy on variables of interest. This difference was also found among less violent and nonviolent men. The authors believe HRR may be useful for differentiating batterers on the dimension of anger-hostility but are less optimistic that HRR will reliably identify psychopathic or antisocial batterers. The authors do not agree that low levels of marital interaction conflict led to their failure to replicate. Reanalysis of data from I C. Meehan, A. Holtzworth-Munroe, and K. Herron (2001) suggests baseline artifacts may be an important determinant of HRR differences. Methodological changes may improve the reliability of HRR assessment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of work load, role ambiguity, and Type A personality on anxiety, depression, and heart rate.

Studied Type A personality (hard driving, persistent, involved in work) as a conditioner of the effects of quantitative work load and role ambiguity (stresses) on anxiety, depression, resentment, and heart rate (strains) among 73 male users (mean age, 23 yrs) of a university computer system that was approaching a 23-day shutdown. Each respondent was his own control. Stress, personality, and psychological strain were assessed by questionnaire, and heart rate was measured. Change scores were then analyzed. Role ambiguity was positively associated with anxiety, depression, and resentment; subjective work load was positively associated only with anxiety. Anxiety was positively related to heart rate. The relationship between work load and anxiety was greatest for Type A persons, and a similar but nonsignificant trend appeared for the effects of anxiety on heart rate. Response and respondent specificity are discussed. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Type D personality and the development of PTSD symptoms: A prospective study.

Psychological trauma and prolonged stress may cause mental disorders such as posttraumatic stress disorder (PTSD). Pretrauma personality is an important determinant of posttraumatic adjustment. Specifically, trait neuroticism has been identified as a risk factor for PTSD. Additionally, the combination of high negative affectivity or neuroticism with marked social inhibition or introversion, also called Type D personality (Denollet, 2000), may compose a risk factor for PTSD. There is no research available that examined pretrauma Type D personality in relation to PTSD. The present study examined the predictive validity of the Type D personality construct in a sample of Dutch soldiers. Data were collected prior to and 6 months after military deployment to Afghanistan. Separate multiple regression analyses were performed to examine the predictive validity of Type D personality. First, Type D personality was defined as the interaction between negative affect and social inhibition (Na × Si). In a second analysis, Type D was defined following cutoff criteria recommended by Denollet (2000). Results showed that negative affectivity was a significant predictor of PTSD symptoms. Social inhibition and the interaction Na × Si did not add to the amount of explained variance in postdeployment PTSD scores over the effects of childhood abuse, negative affectivity, and prior psychological symptoms. A second analysis showed that Type D personality (dichotomous) did not add to the amount of explained variance in postdeployment PTSD scores over the effects of childhood abuse, and prior psychological symptoms. Therefore, Type D personality appears to be of limited value to explain development of combat-related PTSD symptoms. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Type A behavior, personality hardiness, and cardiovascular responses to stress.

Type A behavior and hardiness were examined as predictors of cardiovascular responses to stress in 68 male undergraduates. Systolic and diastolic blood pressure (SBP and DBP) and heart rate were monitored while subjects performed a difficult mirror-tracing task. Type A assessments based on the Structured Interview, but not those based on the Jenkins Activity Survey, were associated with significantly enhanced SBP and DBP elevations. Hardiness was associated with significantly reduced DBP responsiveness. In addition, a significant interaction indicated that the Type B-high hardiness group showed the least DBP reactivity. A near-significant interaction (p?=?.06) suggested that Type B-high hardiness subjects also reported the least anger. Further exploration of the data indicated that the challenge component of hardiness accounted for its relationship to DBP reactivity. These results have implications both for the psychophysiologic study of Type A behavior and for understanding the health-promoting effects of hardiness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heart rate feedback and the management of cardiac neurosis.

Describes the treatment of a 55-yr-old male with chronic cardiac neurosis who had failed to respond to several prior medical and psychological interventions. Significant and durable symptomatic response appeared to be correlated with the application of a combination of procedures including heart-rate feedback, patient-administered desensitization, and therapist-administered flooding. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heart rate variability and newborn heart rate responses to illumination changes.

Investigated heart rate (HR) response patterns to the onset and offset of a 30-sec increase in illumination in 16 human newborns. Ss were divided into 2 groups based on a measure of pretrial HR variability. Only Ss with the high pretrial HR variability responded significantly to the change in stimulation. The response to onset was characterized by a significant quartic trend containing both decelerative and accelerative components. The response to offset only approached significance and had a pattern similar to the onset response. Although the occurrence of systematic response patterns was related to the level of pretrial HR variability, this measure of autonomic lability may have been related to influences associated with delivery and not to stable individual differences. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heart rate variability and heart rate in healthy volunteers. Is the female autonomic nervous system cardioprotective?

AIMS: Heart rate variability has been proposed as an indicator of cardiovascular health. Since women have a lower cardiovascular risk, we hypothesized that there are gender differences in autonomic modulation. METHODS AND RESULTS: In 276 healthy subjects (135 women, 141 men) between 18 and 71 years of age, 24 h heart rate and heart rate variability were determined. All heart rate variability parameters, except for pNN50 and high frequency power, were higher in men. After adjustment for heart rate, we obtained gender differences for: the standard deviation (P=0.049), the standard deviation of the 5 min average (P=0.047), low frequency power (absolute values, P=0.002; normalized units, P<0.001) and ratio low frequency/high frequency (P<0.001). There were no significant gender differences in heart rate variability parameters denoting vagal modulation. Gender differences were confined to age categories of less than 40 years of age. The majority of heart rate variability parameters decreased with age. Only in men, was a higher body mass index associated with a higher heart rate and with lower heart rate variability parameters (P<0.001). CONCLUSION: Cardiac autonomic modulation as determined by heart rate variability, is significantly lower in healthy women compared to healthy men. We hypothesize that this apparently paradoxical finding may be explained by lower sympathetic activity (low frequency power) in women. This may provide protection against arrhythmias and against the development of coronary heart disease.     

Heart rate and skin conductance in behaviorally inhibited Mauritian children.

This study tested predictions that inhibited versus uninhibited children exhibit higher heart rate (HR) and skin conductance (SC) arousal. Mauritian children (N?=?1,795) were tested at age 3 and classified as inhibited, middle, or uninhibited on the basis of social behavior. HR level and several SC measures were obtained immediately before or during a tone task. Inhibited children displayed significantly higher HR and SC levels and longer SC latency relative to uninhibited children. Results remained regardless of ethnicity, gender, height, weight, respiratory complaints, or crying behavior. Findings suggest that HR and SC levels may be early indicators of inhibited or uninhibited behavior at age 3 and support the notion of heightened sympathetic reactivity due to limbic arousal in inhibited children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of speaking rate and lexical status on phonetic perception.

Among the contextual factors known to play a role in segmental perception are the rate at which the speech was produced and the lexical status of the item, that is, whether it is a meaningful word of the language. In a series of experiments on the word-initial /b/p/ voicing distinction, we investigated the conditions under which these factors operate during speech processing. The results indicated that under instructions of speeded responding, listeners could, on some trials, ignore some later occurring contextual information within the word that specified rate and lexical status. Importantly, however, they could not ignore speaking rate entirely. Although they could base their decision on only the early portion of the word, when doing so they treated the word as if it were physically short—that is to say, as if there were no later occurring information specifying a slower rate. This suggests that listeners always take account of rate when identifying the voicing value of a consonant, but precisely which information within the word is used to specify rate can vary with task demands. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A framework for studying personality in the stress process.

This article presents a framework for studying personality in the stress process. The framework specifies that personality may affect both exposure and reactivity to stressful events and that both processes may explain how personality affects health and psychological outcomes. The framework also specifies that personality differences in reactivity may be due to differential choice of coping efforts and differential effectiveness of those efforts. In a 14-day daily diary study of 94 students, this framework was used to analyze the links among neuroticism, daily interpersonal conflicts, coping with conflicts, and distress. Results showed that high-neuroticism participants had greater exposure and reactivity to conflicts. Furthermore, high- and low-neuroticism participants differed both in their choice of coping efforts and in the effectiveness of those efforts, a possibility not considered in previous models of personality in the stress process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A case of multiple personality.

The case of a twenty-five-year-old married woman who was referred because of "severe and blinding headaches" is presented. The case exhibited striking instances of multiple personality manifestations. After an extended presentation of the case, the authors suggest that further direct study of multiple personality and careful reappraisal of Morton Prince's generally neglected formulations be undertaken. 28 references. (PsycINFO Database Record (c) 2010 APA, all rights reserved)