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Biomedical subjects

J R Lucker

Publications and source records attributed to J R Lucker.

5 recordsLinked to original sources
PubMed1996

Evaluation of auditory discrimination in children with ADD and without ADD.

Auditory discrimination abilities of children with and without attention deficits were investigated to measure the variability due to different response modes (verbal [NU-6] and picture pointing [GFW]) and competing messages (GFW). Results showed no differences between response modes in quiet, but significant differences in noise between groups with children having ADD showing poorer speech discrimination. Additionally, differential effects between types of competing messages for the same task were not found in the ADD group. These results are discussed in relation to the clinical use of these tests, the relationships seen between results, and implications for educational management.

Attention↗
PubMed1996

Perception of loudness in children with ADD and without ADD.

Twenty-eight children identified with attention deficits and a comparison group of children without ADD were asked to judge the loudness of speech as comfortable (MCL) or tolerable (TL). Results indicated that children with attention deficits required a softer level to make both of these loudness judgements. Children with ADD had statistically significant differences in their choices of comfort levels (MCL = 51 dBHL) and choices of tolerance levels (TL = 95 dBHL) from their peers without ADD (MCL = 59 dBHL, TL = 100 dBHL). These findings are viewed in relation to perceptual differences between children with and without ADD. Additionally, implications for classroom management are discussed.

Attention↗
PubMed1978

Effects of instructional set on the comfortable loudness range.

Ten normal-hearing young adult subjects measured their Comfortable Loudness Ranges (CLRs) using two instructional sets. The first instructional set (range tracking) was similar to the Bekesy Comfortable Loudness tracking method described by Jerger and Jerger (1974). The second instructional set (limit tracking) required the subjects to perform separate trackings of each limit (upper and lower) of their CLRs. Results demonstrated a 34.4 dB difference between CLRs for the two instructional sets. The range tracking method yielded the narrowest CLR. Both instructional sets yielded similar upper limits of the CLR. The results of the present investigation demonstrate the importance of instructions employed in research and clinical measurements of the CLR.

Adult↗