By the end of the fourth week the embryo's head is apparent and the eyes, nose, mouth, and ears begin to form. How long is the embryo at this point?

Which of the following kinds of items would most likely be found on a culture-fair IQ test?

A) Picture completion B) Sentence completion C) Vocabulary recognition D) General information

A group of four- to seven-year-old children play a game of tag on the playground rigidly, assuming that there is only one way to play. This is an example of __________

a) resilience b) preschool morality c) heteronomous morality d) incipient cooperation stage