Many narcoleptic individuals experience a complete loss of muscle tone, which can cause them to become limp as a rag doll. This phenomenon is called

In survey research, are segments of the total group who are the subject of interest to the researcher

a. populations b. volunteers c. control groups d. samples e. committees

Which of the following is not one of the main focuses of Vygotsky's theory?

a. tools of intellectual adaptation b. social construction of meaning c. psychosexual development d. the role of history and culture in shaping the mind