Tipps S T, Mira M P, Cairns G F
Genet Psychol Monogr. 1981 Nov;104(Second Half):303-24.
Several developing behaviors of a single infant are tracked via direct and continuous measurement through the period of acquisition and decay of these behaviors. Changes in frequency and duration are reported for four motor behaviors, and frequency changes for speech and nonspeech sounds. The relationship of changes in vocal behavior as motor skills are emerging is also explored.
通过在这些行为的习得和衰退期间进行直接且持续的测量，对单个婴儿的几种发展行为进行追踪。报告了四种运动行为的频率和持续时间变化，以及语音和非语音声音的频率变化。还探讨了运动技能出现时发声行为变化之间的关系。
