Emergence of Joint Attention: Relationships Between Gaze Following,Social Referencing,Imitation, and Naming in Infancy

The authors investigated the extent to which the joint-attention behaviors of gaze following, social referencing, and object-directed imitation were related to each other and to infants' vocabulary development in a sample of 60 infants between the ages of 8 and 14 months. Joint-attention skills and vocabulary development were assessed in a laboratory setting. Split-half reliability analyses on the joint-attention measures indicated that the tasks reliably assessed infants' capabilities. In the main analysis, no significant correlations were found among the joint-attention behaviors except for a significant relationship between gaze following and the number of names in infants' productive vocabularies. The overall pattern of results did not replicate results of previous studies (e.g., M. Carpenter, K. Nagell, & M. Tomasello, 1998) that found relationships between various emerging joint-attention behaviors.     

Explaining Addiction: How Far Does the Reward Account of Motivation Take Us?

ABSTRACT

Choice theorists such as George Ainslie and Gene Heyman argue that the drug-seeking behaviour of addicts is best understood in the same terms that explain everyday choices. Everyday choices, they claim, aim to maximise the reward from available incentives. Continuing drug-use is, therefore, what addicts most want given the incentives they are aware of but they will change their behaviour if and when better incentives become available. This model might explain many typical cases of addiction, but there are hard cases that pose a problem. In these hard cases the addicted individual does not cease using drugs in the face of consequences that are so adverse it is implausible that they are unaware of more rewarding paths of action. These cases force the choice theorist into a dilemma: either these addicts’ drug use does not count as action and so is best described by a neurobiological model, or reference to ‘reward’ in these cases means merely ‘motivated’ and so provides no explanatory power. We propose a different model of motivation that takes self-conception into account. We show how that can better explain the hard cases of addiction and also inform our understanding of recovery and self-control.     

A New Measure of Introversion-Extroversion

Five groups of grade school children (N = 237) were selected and administered the Torrance Tests of Creative Thinking. The five groups included urban-middle income children (N = 47), urban-lower income children (N = 49), rural children (N = 72), Indian-lower income children (N = 54), and Indian-impoverished children (N = 15). Significant differences were found on all three measures of verbal creativity, with the verbal flexibility and verbal originality measures significant at the .001 level, and the verbal fluency measure significant at the .005 level. On all three measures, the groups scored from high to low in the following order: rural, urban-middle income, urban-lower income, Indian-lower income, and Indian-impoverished. None of the four measures of figural creativity showed significant differences.     

Tender feet and high stepping: Soring in the Tennessee walking horse industry

This paper focuses on the role relationships between owners, trainers, judges, and federal inspectors in the Tennessee walking horse industry and the accommodations they reach in responding to pressures each places on the others. The paper deals with the practice of soring, or blistering, to alter the gait of the animal and its continued practice despite outcry from humane groups, other horsemen, and the federal government. Trainers are subjected to enormous pressures to win, which means they believe they must “sore” their animals. Because this practice is illegal, they must act in a manner contrary to legal mandates while giving firm lip service to supporting antisoring guidelines.

The study method involved unfocused interviews with 4 U.S. Department of Agriculture inspectors, 14 trainers, and 8 owners. No notes or recording material of any kind were present during the interviews, although notes were committed to paper immediately afterward. Because the first author has been a horseman for some years, he approached the trainers, the jargon of horsemen being unfamiliar to the general public. Other interviews and trade journals were gleaned by both authors.     

Sleep-Related Problems in Pediatric Obsessive-Compulsive Disorder and Intensive Exposure Therapy

Limited research has examined sleep-related problems (SRPs) among children and adolescents with obsessive-compulsive disorder (OCD). The present study addresses this gap by investigating preliminary associations between SRPs, demographic factors (gender and age), family variables (family accommodation and parental stress), and clinical factors (medication status, internalizing and externalizing symptoms, OCD severity, OCD-related impairment), and treatment outcomes in a sample of 103 youth (aged 7 to 17 years; 53% female) with a primary diagnosis of OCD. Clinician, parent, and child measures were used to assess demographic, family, and clinical predictors. SRPs were assessed using an 8-item measure comprising items of the Child Behaviour Checklist, Child Depression Inventory, and Multidimensional Anxiety Scale for Children as used in previous studies. Results showed that SRPs were highly prevalent among this sample and that more SRPs were associated with younger age, internalizing problems, and functional impairment. However, SRPs were not an independent predictor of OCD severity, impairment, or treatment response. Preliminary findings suggest that SRPs among youth with OCD may be more strongly associated with broader internalizing symptoms than with OCD itself. Future longitudinal research is warranted to further explore the complexity of SRPs when co-occurring with pediatric OCD.