Positive reinforcement of litter removal in the natural environment

Litter is an especially large and costly problem in unsupervised high-use recreational areas. This study investigated procedures to induce visitors to remove litter from an unsupervised U.S. Forest Service area in which signs attached to two litter stations instructed people to pick up and deposit litter. A small sum of money or chances on a larger sum given for participation usually resulted in more bags of litter being picked up per week. Although only a small proportion of the area's users participated in the project, ground surveys indicated the areas sampled were somewhat freer of litter during the payment condition. The results suggest that small monetary rewards may be a promising approach to litter control in unsupervised as well as supervised areas.     

Reliability and validity of the Group Embedded Figures Test for a grade school sample.

Data on validity of the Group Embedded Figures Test for 22 sixth grade students (9 boys and 13 girls) were obtained. 50 wk. later all subjects were individually screened on the Portable Rod-and-Frame Test and after a period of 2 more weeks, when they were retested on the embedded figures, data on reliability were obtained. Long-term coefficients of stability of .80 and .71 for the 9 boys and 13 girls, respectively, were obtained. Coefficients of internal consistency ranged from .83 to .98 for boys and girls. Coefficients reflecting both construct and concurrent validity were -.60 and .00 for boys and girls, respectively. Customary sex differences with respect to field-dependence--independence were not observed for these small samples.     

Fear of Hypoglycemia in Parents of Young Children with Type 1 Diabetes Mellitus

The current study examined fear of hypoglycemia in 81 mothers and 64 fathers of young children with type 1 diabetes (T1DM) using the Hypoglycemia Fear Survey-Parents of Young Children (HFS-P-YC possible range = 26–130). Mothers and fathers completed the HFS-P-YC at enrollment and mothers completed it 2 weeks later. Families recorded daily blood glucose on a standardized meter for 2 weeks. Mothers’ mean total HFS-P-YC score was 75.0 (SD = 17.2) and fathers’ mean score was 66.5 (SD = 18.0). Mothers reported greater HFS-P-YC total and behavior subscale scores than fathers. Mothers’ HFS-P-YC scores were comparable to published HFS scores for mothers of preadolescents with T1DM and higher than adult patients with T1DM. The HFS-P-YC had good internal consistency and test–retest reliability in this sample. These findings suggest parents of young children with T1DM report a high level of fear of hypoglycemia. Additionally, the HFS-P-YC appears to be a reliable measure in this population.     

The Benefits of Using Psychotherapy Skills Following Treatment for Depression: An Examination of “Afterwork” and a Test of the Skills Hypothesis in Older Adults

It has long been assumed that one of the reasons clients maintain improvement after psychotherapy is that they learn skills during the course of therapy and continue to apply them once therapy has ended. While research on homework completion and psychotherapy outcome provides support for this assumption, there has been no direct examination of “afterwork,” the use of skills learned in therapy after therapy has ended, or how those posttherapy skills differ across different theoretical approaches. The purpose of this study is to test a skills hypothesis of long-term psychotherapeutic benefit in a sample of 90 older adults who have completed psychotherapy for depression. Helpfulness of the techniques learned in therapy was negatively associated with depressive symptoms up to 2 years after treatment. The number of techniques used was positively correlated with depressive symptoms within 6 months of treatment once helpfulness was controlled, indicating that skills learned in therapy are used when symptoms return. There were also between-group differences in which skills were reported to be covered and used by patients after therapy ended. These findings support the expectation that the benefits of therapy are extended by continuing to use helpful skills learned in therapy.     

Affective ratings and startle modulation in people with nonclinical depression

This study tested predictions based on the emotion context insensitivity (ECI) hypothesis of Rottenberg, Gross, and Gotlib (2005) that a nonclinical sample of people with depressive symptoms would show reduced responses to both positive and negative stimuli relative to people without depression and would show an enhanced response to novelty. Seventy individuals completed diagnostic questionnaires, made ratings of 21 affectively valenced pictures, and then viewed the same 21 pictures and 21 novel pictures while startle blink responses were recorded from electromyographic activity of the orbicularis oculi. People with scores on the Beck Depression Inventory (BDI; Beck, Ward, Mendelson, Mock, & Erbaugh, 1961) indicative of depression demonstrated a lack of affective startle modulation compared to the nondepression group. For all participants, the startle response was larger for novel pictures than for previously viewed pictures, but scores on the BDI were not related to response to novelty. Taken together, the results suggest that nonclinical depression is associated with a lack of affective modulation of startle, as has been shown for clinical depression.     

The efficacy of cognitive-behavioral interventions for reducing anxiety sensitivity: a meta-analytic review

The present study meta-analytically reviewed the efficacy of cognitive-behavioral therapy (CBT) vs. control conditions in the reduction of anxiety sensitivity. A computerized search was conducted to indentify CBT outcome studies that included the Anxiety Sensitivity Index as a dependent variable. Of the 989 studies that were identified, 24 randomized-controlled trials with a total of 1851 participants met inclusion criteria and were included in the analysis. Data were extracted separately for treatment-seeking (16 studies) and at-risk (eight studies) samples. Results indicated large effect sizes for treatment-seeking samples, Hedges' g=1.40, SE=0.21, 95% CI: 1.00-1.81, p<0.001, and moderate to large effect sizes for at risk samples Hedges' g=0.74, SE=0.18, 95% CI: 0.39-1.08, p<0.001. Additionally, both the amount of therapist contact and control modality (waitlist vs. psychological control) moderated the effect sizes for treatment-seeking samples. Our review indicates that CBT is efficacious in reducing anxiety sensitivity. However, more research is needed to determine the mechanisms by which CBT exert its effects on anxiety sensitivity.     

Treatment of self-restraint associated with the application of protective equipment

The current investigation assessed the effectiveness of protective equipment, specifically arm splints, in reducing the occurrence of severe self-injurious behavior (SIB). Although the protective equipment reduced rates of SIB to near-zero levels, self-restraint subsequently emerged. In an attempt to reduce self-restraint while maintaining reductions in SIB, we provided noncontingent access to preferred stimuli. The presentation of preferred stimuli along with the use of protective equipment reduced both the rate of SIB and the duration of self-restraint.