Frank has been asked to complete piaget's pendulum problem. he comes up with some hypotheses and then systematically tests each variable. first, he holds the length of the string and the amount of weight constant and varies the height at which oscillation is started then he moves on to examining the other variables. frank is in which stage of piaget's cognitive developmental theory?

At what age must a person begin receiving their roth 401(k) payments?

Pedestrians, cyclists, skateboarders, and highway construction workers are know as?

Which of the following statements is true about social anxiety disorder? social anxiety disorder tends to develop in early adulthood. social anxiety disorder often co-occurs with mood disorders and other anxiety disorders. social anxiety disorder is relatively rare, with a lifetime prevalence of about three percent in the united states. lesser than 30 percent of adults with social anxiety disorder report humiliating experiences that contributed to their symptoms.