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.
Lab experiments are controlled experiments, although you can perform a controlled experiment outside of a lab setting! In a controlled experiment, you compare an experimental group with a control group. Ideally, these two groups are identical except for one variable, the independent variable.