What is the diathesis-stress hypothesis and how does it explain the development of schizophrenia?

Ineed with number 17 i don’t get it at alll

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?

Francisco loves to learn, but his lack of english makes him feel “nervous and scared.” why is he both happy and scared of school