Juan is suffering from a disease wherein his body is not able to metabolize insulin. Juan most likely has:

Your lifespan developmental psychology class instructor has invited a guest. You come in late so you are not sure of the topic. You listen attentively and hear him say,

"It represents a revolution against the idea that a person must die in an institution surrounded by impersonal machines and technicians." Based on this description, what have you determined is the topic of the lecture? a) hospice b) living will c) assisted suicide d) prearranged funerals

The only research method that can demonstrate a cause-and-effect relationship between variables is the ______ method

a. correlational b. experimental c. case study d. naturalistic observation