Glass, in flat pieces, such as might be employed for windows, has been found in the ruins of Roman houses, both in England and in Italy, and in the house of the faun at Pompeii a small pane in a bronze frame remains.
labile affect that characterized by rapid changes in emotion unrelated to external events or stimuli. restricted affect reduction in the intensity of affect, to a somewhat lesser degree than is characteristic of blunted affect. (af'fekt), Do not confuse this word with effect.lunted affect severe reduction in the intensity of affect; a common symptom of schizophrenic disorders. constricted affect restricted affect.
In behaviorist terms, the lab assistant was originally a neutral stimulus. It is called neutral because it produces no response. What had happened was that the neutral stimulus (the lab assistant) had become associated with an unconditioned stimulus (food).In his experiment, Pavlov used a bell as his neutral stimulus.Whenever he gave food to his dogs, he also rang a bell.After a number of repeats of this procedure, he tried the bell on its own.f the time between the conditioned stimulus (bell) and unconditioned stimulus (food) is too great, then learning will not occur. Pavlov and his studies of classical conditioning have become famous since his early work between 1890-1930.