Dallas is a 10-year-old boy who has a mental age of 10 years. His IQ would be ________

A researcher desires to assess infant state using observers. Which of the following issues

should the researcher be most concerned about? A) The validity of the methods; studies using direct behavior observations to judge infant state have questionable validity. B) It is very difficult to train people to conduct such behavioral observations. C) It is difficult to determine which infant behaviors are tied to infant state change. D) External validity; it may be difficult to obtain a good sampling of infant state because the parents may not allow the observers to record the infant's behavior over long periods of time.

What is the crisis of middle childhood according to Erikson?

A) Competency versus risk-taking B) Basic trust versus mistrust C) Industry versus inferiority D) Latency versus sexual development