Abstract
A behavioral analysis of the strange situation was made with 105 one-year-olds, 100 two-year-olds, and 59 three-year-olds served as subjects. The results showed that throughout all the episodes of the strange situation, three exploratory behaviors ; exploratory locomotion, exploratory manipulation, and visual exploration, increased with age, and so did simling and vocalization directed toward the stranger, but crying decreased with age. A factor analysis on the data of all the subjects was conducted. Seven factors were extracted, five of which were highly related with the episodes. For example, the first factor was closely tied to exploratory behaviors observed in episodes six, seven and eight. The analysis elucidated how the episodes of the strange situation influenced children's behaviors and how the episodes themselves were related to each other.
