Sigmund Freud's definitions of id, ego, and superego are actual parts of the brain.

You are working as an assistant to an OB specialist doing research to determine relationships between certain variables and cause-effect situations. The specialist is attempting to determine when people are motivated by pay or salary, and when they are motivated by recognition, support and encouragement. By examining the connection between rewards and incentives and motivation under various conditions, the specialist appears to be using which of the following approaches in research?

a. open-systems b. systematic study c. human resources approach d. observational e. scientific management

The key vitamin involved in the transduction of radiant energy is vitamin

a. A. b. B. c. C. d. D. e. E.