According to the article PPll lease Pass the Vegetabll lesabout egocentricity in small children, based on his observations, Piaget believed that children were still very egocentric and could not correctly perform his classic test of egocentricity

What is one of the major difficulties assessing young infants?

a. Their states of arousal and motivation vary greatly from one hour or even minute to the next. b. They often fall asleep during the assessment. c. Their mothers generally do not like to be assessed. d. The results have no meaning.

To what does the sensitivity of a measure refer?

a) The capacity to reflect random variation within the experimental groups b) The capacity to reflect systematic variation between the experimental groups c) The capacity to detect ceiling or floor effects d) The number of response options provided to participants