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Biomedical subjects

George R Mastroianni

Publications and source records attributed to George R Mastroianni.

2 recordsLinked to original sources

Kurt Gottschaldt's ambiguous relationship with national socialism.

Kurt Gottschaldt (1902-1991) was active in psychological research in Germany throughout much of the past century. His best-known contributions relate to three "twin camps" he ran in the late 1930s. These twin camps were designed help assess the relative contributions of heredity and environment in determining the development of psychological attributes and behavior. Gottschaldt's conclusions favored a hereditarian interpretation of his results, and Gottschaldt promoted the relevance of his twin research to "race psychology." Although Gottschaldt is sometimes described as a defender of scientific objectivity who maintained independence from Nazi ideology during the National Socialist era, some of his work suggests that a modest revision of this view may be required.

Child↗

Self-pacing and cognitive performance while walking.

Ten hikers completed a 4 km hike on hilly terrain three times: once self-paced without load, once self-paced with a backpack load of 10% body weight, and once externally paced with a backpack load of 10% body weight. Subjects performed mental arithmetic tasks and provided ratings of perceived exertion while walking. No differences in speed or accuracy of performance of mental arithmetic problems were observed. A battery of cognitive and physical tests was performed prior to walking and after each of the three walks. Significant differences between pre-walk baselines and post-walk tests were found only for the pattern-matching task. Subjects altered their pace in response to the addition of the backpack load, and altered their speed on downhill terrain in response to external pacing. Ratings of perceived exertion were found to correlate relatively well (r = 0.80) with heart rate, but consistently underestimated actual heart rate. Underestimation was much greater for downhill than for uphill terrain. Underestimation of heart rate by rating of perceived exertion was least when subjects carried an external load of 10% body weight.

Adolescent↗