Biomedical subjects

A M Schell

Publications and source records attributed to A M Schell.

49 records · Page 3Linked to original sources

PubMed1982

A prospective study of delinquency in 110 adolescent boys with attention deficit disorder and 88 normal adolescent boys.

The authors studied official arrests from childhood through adolescence in two groups of boys; one group (N = 110) was diagnosed in childhood as suffering from attention deficit disorder (ADD), and the second group (N = 88) consisted of normal control adolescents. Rates of single and multiple serious offenses and of institutionalization for delinquency were significantly higher in the ADD subjects. These findings suggest a strong relationship between childhood ADD and later arrests for delinquent behavior.

Adolescent↗

PubMed1980

Potential risk of prolonged administration of stimulant medication for hyperactive children.

A battery of clinical laboratory evaluations was obtained biannually in hyperactive boys treated continuously with methylphenidate hydrochloride for 1 to 4 years. Blood pressure and heart rate were evaluated annually. Pretreatment baseline studies did not implicate low blood glucose or calcium levels, or anemia, as factors contributing to hyperactivity. Prolonged administration of methylphenidate hydrochloride was not associated with disturbances in the hemopoietic, endocrine, hepatic or cardiovascular functions analyzed.

Attention Deficit Disorder with Hyperactivity↗

PubMed1979

Autonomic classical conditioning as a function of awareness of stimulus contingencies.

Two groups of 32 college students were presented compound CSs (lights and tones presented simultaneously) during a classical conditioning paradigm. By means of a masking task and verbal instructions, a partially informed group was made aware of only the visual CS's contingency with the UCS, while a fully informed group was made aware of both the visual and auditory contingencies. Autonomic indices of conditioning (electrodermal responses, heart rate, and digital pulse volume) were later measured to the individual component CSs and to various compound CSs. It was found that: (1) the partially informed group exhibited conditioning exclusively to the visual CS+ and to compounds which included the visual CS+, while (2) the fully informed group exhibited conditioning to both visual and auditory CS+s. The results confirm the importance of awareness in human autonomic discrimination classical conditioning. It is suggested that human autonomic conditioning may be usefully conceptualized as an information processing task with the autonomic indices of conditioning reflecting central cognitive processes.

Acoustic Stimulation↗

PubMed1978