乳児の微笑反応についての縦断的研究
出生直後の自発的微笑反応との関連において
1974 年 45 巻 5 号 p. 256-267
詳細
1974 年 45 巻 5 号 p. 256-267
14 infants were measured in terms of their smiling, attention, reaching and crying responses to the stimuli of 4 auditory and 7 visual from the 1st to the 7th month, every month. All except one had already been recorded spontaneous smiling responses at age of 3 to 6 days. Voices, bugles and rattles which had relatively highpitched sounds elicited more frequent smiles than the low-sound bells. The correlation coefficients between the smiling time recorded on the 4th, 5th, 6th and 7th months were significantly high for the visual stimuli. The smiling time to each facial models was in proportion to the similarities to the actual adult faces after the 4th month. The correlation coefficients between the spontaneous smiling time immediately after birth and the elicited smiling time after 4th month were found to be significantly high. The elicited smiles of infants seem to be based on the innate spontaneous smiles.
