The present study extended the Lewis and Goldberg (1968) study and included the parameter of infant temperament as defined by Thomas, Chess, Birch, Hertzig and Korn (1963). As in the Goldberg study, the index of response decrement was used as a measure of the infant 1 8 development. ·It was hypothesiz.ed that res::1onse decrement would be positively correlated with a high freouency of caregiver stimulation and negatively correlated with bigh infant intensity and activity ratings.Response decrement is the measured decrease in the amount of time an infant looks at a novel stimulus after several trials. It was computed by observing the infant's fixation to a single blinking light over four trials, and subtracting the total amount o! time looking on trial four from trial one. A checklist was used to record care~iver looking, smiling, touching, holding, vocalizing and reading for a ten minute period. Intensity and activity scores were derived from the Survey of Temperamental Characteristics (Carey, 1970) which was completed by caregivers. Results did not confirm the hypothesis.No significant relationship between caregiver behaviors, infant activity or intensity and response decrement was discovered. Possible reasons for the non-significant results of the present study were discussed. AN
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