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Biomedical subjects

W H Redd

Publications and source records attributed to W H Redd.

63 records · Page 4Linked to original sources
PubMed1969

Effects of mixed reinforcement contingencies on adults' control of children's behavior.

Two severely retarded boys, each a member of a different play group, experienced three regimes of reinforcement from adults [contingent, noncontingent, and mixed (contingent and noncontingent)]. The agent of contingent reinforcement acquired stimulus control of the subjects' behavior; the noncontingent agent did not. The agent of the mixed schedule of reinforcement did not gain control, but aspects of his behavior came to function as cues. The mixed adult's withholding reinforcement in the absence of the target behavior (cooperative play) evoked cooperative play, whereas his presenting free reinforcement resulted in the subjects' remaining in their inactive, baseline positions.

Journal Article↗
PubMedDate not supplied

Post-traumatic stress disorder in cancer: a review.

The stressor criterion for Post-Traumatic Stress Disorder (PTSD) has been recently modified to include life-threatening illnesses, such as cancer, as precipitating traumatic events. We sought to examine the empiric evidence for cancer's inclusion as a traumatic stressor. Nine published studies assessing PTSD in cancer survivors and/or family members were identified in the literature. The studies were predominantly small (n<100) and cross-sectional. Study target groups included one or more of the following: children cancer survivors, parents of pediatric survivors and adult cancer survivors. There was considerable inter- and intra-study variability in the type and stage of cancer diagnosed and in the type of treatment regimens participants had undergone. Only three studies utilized a validated PTSD diagnostic tool to evaluate the disorder. Evidence of full-blown PTSD was found for adults and parents, and for children in all but one instance. These results suggest that a PTSD symptom assessment provides valuable clinical information concerning the post-treatment adjustment of cancer survivors and their immediate family members.

Adult↗
PubMedDate not supplied

Association of psychological vulnerability factors to post-traumatic stress symptomatology in mothers of pediatric cancer survivors.

The current study investigated whether individual differences in coping style, lifetime experience of traumatic events, perceived social support, and perceived social constraints were associated with symptoms of post-traumatic stress among 72 mothers of children who had successfully completed cancer treatment. Results suggested that more perceived social constraints and less perceived belonging support were associated with significantly more post-traumatic stress symptomatology, and this association was present after controlling for the effects of child age. Monitoring coping style and lifetime traumatic events were not significantly predictive of post-traumatic stress symptoms. The results of this study indicate that a sense of belonging to a social network as well as comfort expressing cancer-related thoughts and feelings to friends and family may play a key role in mothers' long-term adjustment to this extremely difficult life experience.

Adaptation, Psychological↗
PubMedDate not supplied

Global meaning and psychological adjustment among survivors of bone marrow transplant.

The purpose of the present study was to examine global meaning (i.e. the belief that life has purpose and coherence) and psychological adjustment in survivors of bone marrow transplantation (BMT). Eighty-five survivors of BMT participated in a telephone interview. Regression analyses demonstrated that after controlling for physical functioning, stressor severity, and gender, global meaning was inversely related to global psychological distress and BMT-related psychological distress (i.e. posttraumatic stress disorder-like symptoms related to the cancer treatment). Global meaning was also positively related to mental health aspects of quality of life (e.g. emotional functioning and social functioning). These findings suggest that global meaning may be an important factor in the psychological adjustment of BMT survivors.

Adaptation, Psychological↗
PubMedDate not supplied

Fragrance administration to reduce anxiety during MR imaging.

Fifty-seven outpatients received either heliotropin (a vanillalike scent) with humidified air (n = 20) or humidified air alone (n = 37) via a nasal cannula during magnetic resonance imaging in the diagnostic workup for cancer. Delivery of heliotropin and air was determined by a computer-controlled schedule. Fragrance administration resulted in a statistically significant reduction in average overall patient-rated anxiety (on a visual analog scale) during imaging in patients who found the fragrance moderately to extremely pleasant. Administration of fragrance was associated with 63% less anxiety than administration of humidified air alone. Physiologic measures (pulse and heart rate) did not show a statistically significant effect with fragrance administration.

Adult↗
PubMedDate not supplied

An experimental analysis of classically conditioned nausea during cancer chemotherapy.

This study investigated classical conditioning in women undergoing outpatient adjuvant chemotherapy for breast cancer. Breast cancer chemotherapy outpatients were randomly assigned either to an Experimental Group (exposed to a distinctive stimulus before each infusion of chemotherapy) or to a Control Group. After repeated infusions of chemotherapy, patients' responses to the experimental stimulus were assessed in a location not associated with chemotherapy. Experimental Group patients had increased nausea (self-reported on a visual analog scale) following the presentation of the experimental stimulus at this test trial, whereas Control Group patients did not. Two other measures of nausea corroborated these results. Post hoc statistical analyses confirmed predictions based on conditioning theory. This conditioning model of anticipatory nausea bears witness to the relevance of classical conditioning in clinical medicine.

Antineoplastic Combined Chemotherapy Protocols↗