Research
Research
Research
Research
36+ open-access research outputs.
Children's knowledge of contagion and contamination as causes of illness was examined in 3 experiments. In Experiment 1, preschoolers and children in grades 1 and 3 were shown videotaped segments of p…
In this study we investigated whether locus of control, hopelessness, and depression were primary risk factors for suicide ideation and attempts in African American youth, and whether congruency betwe…
The current study tested the model proposed by Campbell and Oei (2010), and assessed the separate components of the model to best explain the intergenerational transference of alcohol use behaviour. R…
The key-pecking of a pigeon was reinforced with grain on an 18-min second-order schedule. During the 18 min, a key peck which completed a 3-min fixed interval produced a stimulus of 0.5-sec duration. …
Extreme sports, defined as sporting or adventure activities involving a high degree of risk, have boomed since the 1990s. These types of sports attract men and women who can experience a life-affirmin…
Eating disorders are a particular problem for college students, as well as college athletes and military personnel. We examined the incidence, prevalence, and risk of eating disorders at the United St…
In Experiment 1, three capuchin monkeys (Cebus apella) were exposed to a mirror in their home cage for 3 days and then given food treats for touching orange marks located on the surface of an experime…
BACKGROUND: Previous reports suggest that omega-3 (n-3) polyunsaturated fatty acids (PUFA) supplements may reduce ADHD-like behaviour. Our aim was to investigate potential effects of n-3 PUFA suppleme…
Studies assessing processing of facial expressions have established that cortisol levels, emotional traits, and affective disorders predict selective responding to these motivationally relevant stimul…
This study examines the role of religious coping in couples' diabetes management processes. Eighty-seven couples where one spouse had type 2 diabetes were surveyed. The relationships between religious…
Excessive consumption of sugar sweetened drinks is proposed to produce functional changes in the hippocampus, leading to perturbations in learning and memory. In this study we examined the impact of 2…
RATIONALE: Across species, effort-related motivation can be assessed by testing behaviour under a progressive ratio (PR) schedule of reinforcement. However, to date, PR tasks for rodents have been ava…
Consistent with a popular theory of associative learning, the Pearce-Hall (1980) model, the surprising omission of expected events enhances cue associability (the ease with which a cue may enter into …
OBJECTIVE: Recent work suggests that the psychology of pathogen-avoidance has wide-reaching effects on how people interact with the world. These processes - part of what has been referred to as the be…
Modern sciences, the philosophy of insight, and psychology are the basis for a discussion of the question, whether animals can experience boredom or even suffer from it. Various examples are used for …
BACKGROUND: Although self-reported and official measures of criminal behaviour are highly correlated, the concordance between self-reports and official records appears to vary across the population. F…
Dogs likely were the first animals to be domesticated and as such have shared a common environment with humans for over ten thousand years. Only recently, however, has this species' behavior been subj…
OBJECTIVES: To be able to provide appropriate information about sex to adolescent students in the Cote D'Ivoire, we conducted a study to determine knowledge, behavior, and attitudes toward sex.METHODS…
Adults have little difficulty perceiving objects as complete despite occlusion, but newborn infants perceive moving partly occluded objects solely in terms of visible surfaces. The developmental mecha…
Purpose: This study examined the unique and shared variance that nonword repetition and vocabulary knowledge contribute to children's ability to learn new words. Multiple measures of word learning wer…
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