This study provided Tapping Test norms for young legal offenders by measuring 54 Anglo male probationers (35 juveniles, 19 adults) in Study I, and 127 probationers aged 12-17 within eight sex/age/ethnicity subgroups in Study II. The Tapping Test, a measure of fine-motor speed, forms part of the Halstead-Reitan battery for neuropsychodiagnosis. Study I results suggest that tapping speed related to age for juvenile male delinquents, p less than .01; for adults, speed relates to IQ, p less than .05. Study II results suggest that Anglo females--but not non-Anglo females-- tap slower than males, p less than .01. The results were only paritally consistent with those of prior studies. Future researchers may wish to: (a) refine norms by appropriate adjustments for age and IQ; (b) investigate why Anglo female delinquents were especially slow on the Tapping Test; and (c) evaluate to what extent false positives may be provoked on this test by depression rather than organicity.
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