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No children in special classes or children with a history of grade repetition were included in the study. Similar findings were reported for Brazilian children (Brito & Santo-Morales, 2002). These authors noted that the performance differences between hands were equivalent in boys and girls. Mathiowetz et al. (1986) provided normative data, based on a three-trial administration, for 176 subjects aged 14 to 19 years. The adolescents had no history of neuromuscular or orthopedic dysfunction that would affect finger dexterity. Unfortunately, hand preference was not reported. The scores, shown in Table 14-28, are somewhat higher than those reported by Gardner and Broman (1979), perhaps reflecting the influence of practice afforded by additional trials. Others (Tupper cited in Baron, 2004; Wilson et al. 1982) have modified the pegboard by shortening the board from 25 to 15 holes in each row so that it can be used with preschoolers. They compiled data for the peg placement portions only.
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Lafayette Instrument Purdue Pegboard Test PO Box 5729 Lafayette, IN 47903 USA . Phone: (765) 423-1505 10 Table 14-29 presents the data reported by Wilson et al. (1982). Participants completed one trial on each subtest. Reliability Test—Retest Reliability and Practice Effects The number of trials allowed per subtest affects reliability. For one-trial administrations over intervals of 1 to 2 weeks, correlation coefficients, ranging from .37 to .82, have been obrained for normal individuals (Buddenberg & Davis, 2000; DesRosiers et al., 1995; Reddon et al., 1988; Tiffin, 1968). Three-trial administrations yield higher reliabilities (.76 to .89) after retest intervals of 1 week (.81 to .89; Buddenberg & Davis, 2000) and 6 months (.76 for peg-placing trials; Doyen & Carlier, 2002). It is important to note that right-left difference scores or ratios tend not to be very reliable, with correlations ranging from .22 to .61 (Reddon et al., 1988; Sappington, 1980). Reddon et al. (1998) noted that, when normal right-handed adults were tested weekly over five occasions, the right-hand was greater than the left-hand score on the average 50% of the time in men (range, 0% to 100%) and in women, the right-hand score was greater than the left-hand score on the average 62.9% of the time (range 10% to 100%). Because changes in performance occur commonly in normal adults, considerable caution should be exercised in interpreting any changes in between-hand asymmetry. There are practice effects, with scores improving on subsequent trials (DesRosiers et al., 1995; Feinstein et al., 1994; Reddon et al., 1988; Wilson et al., 1982). For example, Peinstein et al. (1994) examined the effects of practice in healthy volunteers tested at 2- to 4-week intervals over eight test sessions. Performance improved with time and was still discernible at the eighth session. Age also appears to interact with practice. The improvement was more marked for younger subjects, aged 25 to 33 years, who performed better than older subjects, aged 41 to 57 years, and who continued to improve for a greater length of time.
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  • Fall '19
  • Left-handedness, Handedness, Purdue Pegboard

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