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Biomedical subjects

D F Ross

Publications and source records attributed to D F Ross.

7 recordsLinked to original sources
PubMed1993

Modification of the traditional bone conduction hearing aid.

The purpose of this technical note is to describe a modification of the traditional bone conduction hearing aid used for the treatment of hearing impairment associated with atresia, microtia, or auditory canal anomalies. This modified unit offers a viable alternative to patients wanting an alternative to the traditional model or an implantable bone conduction aid.

Bone Conduction↗
PubMed1989

Modification of the balanced-placebo design for use at high blood alcohol levels.

One hundred seventy-nine volunteer male subjects participated in a test of a modified version of the balanced-placebo design at clinically significant B.A.L.s (.081-.105 mg/dl). Half of these subjects were given dose and instructions according to a standard balanced-placebo design; the others received active placebos where appropriate, and instructions tailored to accomodate the mismatch between dose and expectancy. A measure of subjective intoxication was taken after a forty-minute drinking period, and again thirty minutes later. The results showed the modified balanced placebo design to be superior to the standard approach in creating subjective intoxication consistent with instructions and stable over time. An attributional formulation of the results is offered and the modified balanced-placebo design is advanced as an alternative particularly useful for the investigation of dose/expectancy effects at high B.A.L.s.

Adolescent↗
PubMed1988

Alcohol, self-focus and complex reaction-time performance.

The effects of alcohol, expectancy and state-trait varieties of public self-focus on complex reaction-time performance were evaluated. The procedure crossed a 2 (expectancy) X 2 (dose) modified balanced-placebo design with two levels of public self-awareness (normal versus high). A median split procedure performed on public and private self-consciousness scale scores served to evaluate trait effects. Results indicated that subject's task performance was best understood as an interaction between his subjective experience of intoxication-sobriety, his beliefs concerning what he had drunk and the salience of situational standards toward effortful performance. Public self-consciousness proved to mediate the behavioral expression of conventional expectancies concerning drunken comportment. Interactions between alcohol, expectancy and self-focus are discussed in terms of an interactive model of drunken comportment.

Adolescent↗
PubMed1985

Sex and aggression: the influence of gender label on the perception of aggression in children.

To investigate the influence of gender label on adults' perceptions of aggression in children, a videotape of 2 preschool children playing roughly in the snow was shown to 175 college students (139 females, 36 males) who were asked to judge the degree of aggression displayed by 1 of the children (the target child). In the videotape, the children's snowsuits disguised their actual gender, and 4 experimental conditions were created by varying the gender label of both the target and the other (nonrated) child. Hence, the 4 conditions consisted of all possible combinations of gender; boy-boy, boy-girl, girl-boy, and girl-girl. All subjects viewed the same film; only the gender labels used to describe the children varied. Subjects' aggression ratings of the target child varied significantly as a function of the gender label attributed to both the target and the nonrated child. Specifically, the boy-boy condition was rated as significantly less aggressive than the other 3 conditions, which did not differ in level of perceived aggression. This effect was particularly strong among subjects with more experience with children. The results have interesting implications for understanding the process of social category perception.

Adult↗