Word: guinea
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...guinea pigs" in Harvard are Dr. Bock's normal boys; in the Psychological Clinic at 64 Plympton Street a group of 26 children from four to six years old are having their personalities analyzed and their complexes examined...
...authority on tooth decay) and his work on nutrition and pneumonia. In The Lancet last week, Sir Edward discussed "The State and Medical Research," told of the "first recorded experiment in medical science by a king himself," an experiment remarkably similar in technique to work done by scientists on guinea pigs today. Said Sir Edward: "Frederick the Second. Emperor of the Romans, King of Sicily and Jerusalem, known as Stupor Mundi, the Wonder of the World, A. D. 1192-1250. Of him it is recorded that he took two knights and gave them identical meals. One of these knights...
...made profound studies of the "conditioned response" and whose specialty is the mechanism of hearing in mammals. By last week Dr. Culler had finished installing his battery of gadgets and he was able to show Rochester newshawks how he determines the threshold of hearing in a dog, cat or guinea...
...faint musical tone sounds, followed after a short interval by a mild electric shock administered through the bars of the cage. If the animal runs the turning of the cage switches off the current, thus sparing the subject further shock. After a few experiences the dog, cat or guinea pig learns to avoid shock by running the moment it hears the musical signal. When this conditioned response is set up Dr. Culler can easily find the threshold of hearing by steadily diminishing the loudness of the signal until the animal no longer responds by running. Dogs, which hear best, have...
Irrespective of their individual hearing abilities, dogs learn most quickly how to avoid shock and guinea pigs are slowest. The scientist found one genius of a guinea pig, however, which learned what to do after only one experience...