There will be a total of 15 subjects in the study, all of whom will be drawn from a local clinic serving autistic children and who receive, as part of clinic services, teacher instruction on various topics from clinic teachers. Children selected will be 11 to 12 years of age (the appropriate age level for the study's measure of aggressive behavior which is the Aggressive Behavior Checklist). Children will be randomly selected from a prepared list of names of clinic students who meet the subject selection criteria. Permission from parents of all children will be obtained before admitting children to the study and parents will be assured of the confidentiality of all findings.
The measure of aggression in the proposed research will be Shapiro's (2000) Aggressive Behavior Checklist which can be used by teachers to assess a wide range of both verbal and non-verbal aggressive behaviors. There is a specific form just for teachers to rate students. According to Shapiro (2000), the instrument can be used to provide a multidimensional picture of the aggressive behavior of students between 11 and 13 years of age, and can be applied to both regular and special education children. The instrument contains norms and utilizes Likert type scaling for a total of 17 aggressive behaviors. Shapiro reports moderate to good reliability data with test-rest values averaging 0.69 and internal consistency coefficients at .91. Criterion validity was tested and found to be acceptable.
The measure of teaching strategies will consist of a researcher-designed instrument. This instrument will collect teacher ratings of each of the various teaching strategies used in Greenspan's (1998) Floor time intervention. Ratings will utilize Likert-type scaling varying from 1 to 6 with the effectiveness of the strategy on reducing aggression increasing with the numerical value of the scale score.
In this particular design, a baseline measure of sample subjects' aggressi...
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