Music and Video as Distractors for Boys with ADHD in the Classroom: Comparison with Controls,Individual Differences,and Medication Effects

This study examined the effects of music and video on the classroom behavior and performance of boys with and without attention deficit hyperactivity disorder (ADHD) and examined the effects of 0.3 mg/kg methylphenidate (MPH). In one study, 41 boys with ADHD and 26 controls worked in the presence of no distractor, music, or video. Video produced significant distraction, particularly for the boys with ADHD, and MPH improved the performance of boys with ADHD across distractor conditions.There were individual differences in response to the music such that some boys were adversely affected and others benefited relative to no-distractor.In a second study, music and MPH were assessed in an additional 86 boys with ADHD to examine further the music results. In the presence or absence of music, MPH improved performance relative to placebo. Similar individual differences were found as in Experiment 1.     

Parasite prevalence and the distribution of intelligence among the states of the USA

In this study, we tested the parasite-stress hypothesis for the distribution of intelligence among the USA states: the hypothesis proposes that intelligence emerges from a developmental trade-off between maximizing brain vs. immune function. From this we predicted that among the USA states where infectious disease stress was high, average intelligence would be low and where infectious disease stress was low, average intelligence would be high. As predicted, we found that the correlation between average state IQ and infectious disease stress was ? 0.67 (p < 0.0001) across the 50 states. Furthermore, when controlling the effects of wealth and educational variation among states, infectious disease stress was the best predictor of average state IQ.     

A demonstration of dual-task performance without interference in some older adults

Highly efficient dual-task processing is demonstrated when reaction time to each of two tasks does not differ between the dual-task situation and the single-task situation. This has been demonstrated reliably in younger adults; nevertheless, the two extant studies of extensive dual-task training did not find evidence for it in any elderly adult. The origins of age-related differences after training were explored in a study in which the stimuli for the two tasks were perfectly redundant although two distinct responses were required. The dual-task situation thus greatly reduced the demands of stimulus categorization while still requiring two response selections and two response executions. After only limited training 8 of 8 younger adults and 5 of 8 older adults showed performance consistent with highly efficient processing. Three older adults failed to show this even after 12 training sessions. The results implicate stimulus categorization more than response selection as an important locus of inefficient dual-task processing, particularly for older adults.     

Behavior analysts in the war on poverty: A review of the use of financial incentives to promote education and employment

Poverty is a pervasive risk factor underlying poor health. Many interventions that have sought to reduce health disparities associated with poverty have focused on improving health‐related behaviors of low‐income adults. Poverty itself could be targeted to improve health, but this approach would require programs that can consistently move poor individuals out of poverty. Governments and other organizations in the United States have tested a diverse range of antipoverty programs, generally on a large scale and in conjunction with welfare reform initiatives. This paper reviews antipoverty programs that used financial incentives to promote education and employment among welfare recipients and other low‐income adults. The incentive‐based, antipoverty programs had small or no effects on the target behaviors; they were implemented on large scales from the outset, without systematic development and evaluation of their components; and they did not apply principles of operant conditioning that have been shown to determine the effectiveness of incentive or reinforcement interventions. By applying basic principles of operant conditioning, behavior analysts could help address poverty and improve health through development of effective antipoverty programs. This paper describes a potential framework for a behavior‐analytic antipoverty program, with the goal of illustrating that behavior analysts could be uniquely suited to make substantial contributions to the war on poverty.     

Impulsivity and Suicidality in Adolescent Inpatients

Suicide is the second leading cause of death among adolescents, and impulsivity has emerged as a promising marker of risk. The present study tested whether distinct domains of impulsivity are differentially associated with suicide ideation, plans, and attempts. Adolescents (n?=?381; boys?=?106, girls?=?275) aged 13–19 years (M?=?15.62, SD?=?1.41) were recruited from an acute, residential treatment program. Within 48 h of admission to the hospital, participants were administered structured clinical interviews assessing mental health disorders and suicidality. Following these interviews, participants completed self-report questionnaires assessing symptom severity and impulsivity. Consistent with past research, an exploratory factor analysis of our 90-item impulsivity instrument resulted in a three-factor solution: Pervasive Influence of Feelings, Feelings Trigger Action, and Lack of Follow-Through. Concurrent analysis of these factors confirmed hypotheses of unique associations with suicide ideation and attempts in the past month. Specifically, whereas Pervasive Influence of Feelings (i.e., tendency for emotions to shape thoughts about the self and the future) is uniquely associated with greater suicidal ideation, Feelings Trigger Action (i.e., impulsive behavioral reactivity to emotions) is uniquely associated with the occurrence of suicide attempts, even after controlling for current psychiatric diagnoses and symptoms. Exploratory gender analyses revealed that these effects were significant in female but not male adolescents. These findings provide new insight about how specific domains of impulsivity differentially increase risk for suicide ideation and attempts. Implications for early identification and prevention of youth suicide are discussed.     

Delivery of internet treatment for compulsive hoarding (D.I.T.C.H.)

This study tested the effectiveness of an existing private online CBT-based group intervention designed to help people with hoarding. Web-group participants were hypothesized to show more improvement in hoarding symptoms over time compared to those placed on a naturalistic waitlist. This web-based self-help group (N = 106 members, N = 155 waitlisted) includes a formal application process and requires that participants post action steps and progress at least once monthly. Members have access to educational resources on hoarding, cognitive strategies, and a chat-group. Potential research participants were invited to complete an anonymous web-based survey about their hoarding behaviors and clinical improvement on five occasions (3 months apart). The sample was mainly middle-aged, female and White. Regression analyses show that Recent members reported greater improvement and less clutter at 6 months (than Waitlist). Long-term members reported milder hoarding symptoms than Recent ones, suggesting benefits from group participation over time. All members showed reductions in clutter and hoarding symptoms over 15 months. Less posting activity was associated with greater hoarding severity. Online CBT-based self-help for hoarding appears to be a promising intervention strategy that may extend access to treatment. Evaluating the benefits of internet self-help groups is critical given growing popularity of and demand for web-based interventions.     

Post‐It® Note Persuasion: A Sticky Influence

Four studies examine the influence of attaching a seemingly insignificant Post‐it^® note to a survey packet on the likelihood of completing the survey. Participants who received a packet with an affixed Post‐it note request had significantly higher return rates than participants who received the identical survey with (a) no sticky note, (b) the same message written on the cover sheet but without a Post‐it, or (c) a blank Post‐it with no message provided. Furthermore, they returned the materials more promptly with higher quality responses. A more personalized Post‐it appeal increased returns when the survey was long and time consuming but was no more effective than a nonpersonalized Post‐it when the survey was easy to complete. Results suggest that the Post‐it leads the request to be interpreted as a solicitation for a personal favor, facilitating a normative compliance response.     

Sex Differences in Simple Visual Reaction Time: A Historical Meta-Analysis

To test the hypothesis that the magnitude of sex differences in simple visual reaction time (RT) has narrowed across time, a meta-analysis was conducted on 72 effect sizes derived from 21 studies (n=15,003) published over a 73-year period. The analysis provided strong evidence for the hypothesized change. In addition, the analysis indicated that the sex difference in RT was on average smaller with non-U.S. samples than with U.S. samples. No relation was found between the magnitude of the sex difference in RT and age or presence vs. absence of a warning signal. Two factors–-participation in fast-action sports and driving–-are proposed as having been responsible for the decrease in the magnitude of the sex differences in simple visual RT across time.