| Abstract: | Examined similarities between experimental findings with obese human Ss and lesioned hyperphagic rats. In comparison to normals, obese Ss (a) eat more of a good- and less of a bad-tasting food; (b) eat fewer meals/day, eat more/meal, and eat more rapidly; (c) react more emotionally; (d) eat more when food is easy to procure and less when it is difficult; (e) do not regulate food consumption when preloaded with solids, but do when preloaded with liquids; and (f) are less active. N. Mrosovosky's theory that the ventromedial hypothalamus is functionally quiescent in obese Ss is discussed. The function of the hypothalamus is examined. It is hypothesized that obese Ss are stimulus-bound. Experiments reveal that obese Ss (a) do better on recall tests, (b) respond faster with fewer errors on complex RT tasks, (c) are more distractible, and (d) work harder for food when food cues are prominent. Reexamining the activity levels of Ss, it was found that beyond a given stimulus intensity, Ss are more reactive than normals. Difficulties with the comparison and formulation are noted. (38 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
