In a laboratory experiment, a pigeon receives food after each peck at a lit key. After establishing this behavior, the researcher suddenly stops providing reinforcement. According to research on extinction following continuous reinforcement, what would you expect to observe?

A baseball player who wore the same unwashed socks during a winning streak believes the socks are responsible for his success. This exemplifies which psychological phenomenon?

A student who believes she will fail her psychology exam despite adequate preparation performs poorly due to anxiety and negative thoughts during the test. This phenomenon best illustrates the impact of:

A researcher studying superstitious behavior told participants they would receive mild electric shocks but actually delivered no shocks, revealing the deception only after collecting behavioral data. Which ethical principle was violated?

A researcher observes that 10-month-old Sophia becomes extremely distressed when her mother leaves the room, but 24-month-old Ethan shows minimal distress in the same situation. This difference most likely reflects:

In classical conditioning, what does the term 'extinction' refer to?

In studying adolescent social development, researchers notice that while friendship patterns change dramatically, core values about loyalty remain relatively stable. This observation best illustrates which developmental psychology concept?

A developmental psychologist conducted a conservation task study with 20 children aged 5-8 years. The children were shown two identical rows of coins, then one row was spread out. Their responses were scored as 1 for understanding conservation and 0 for not understanding. The scores by age were: Age 5 (0,0,0,0,0), Age 6 (0,0,1,0,1), Age 7 (1,1,0,1,1), Age 8 (1,1,1,1,1). What is the mean score for children aged 7 and 8 combined?

How does semantics contribute to language?

A community experiences a major economic downturn, leading to budget cuts in after-school programs. According to ecological systems theory, how might this exosystem change affect adolescent social-emotional development?

During a family vacation, a child observes his older sister being praised for using proper table manners at an upscale restaurant. The next day, he carefully mimics her behavior at breakfast. Which factor most strongly influences his behavioral change?

A researcher is studying the effectiveness of different reinforcement schedules on learning a new behavior. Which of the following would be most likely to produce the fastest initial acquisition of the target behavior?

A 28-year-old Japanese professional lives with his parents while working full-time, contributing to household expenses, and helping care for his elderly grandmother. His American colleagues often question why he hasn't moved out on his own. This scenario best illustrates which concept?

In a preschool, researchers notice that when dress-up clothes are organized by 'boys' and 'girls' sections, children strictly adhere to these divisions. When reorganized by type (costumes, professional wear, everyday clothes) without gender labels, children freely choose based on their interests. What developmental concept does this observation best illustrate?

What does the theme of 'Continuity vs. Discontinuity' address in developmental psychology?

A longitudinal study finds that children who experienced delayed walking (after 15 months) showed different problem-solving approaches at age 5 compared to early walkers. Which conclusion about development is best supported?

A therapist is treating a client with a phobia using exposure therapy based on extinction principles. Which statement would represent the most accurate prediction about treatment outcomes based on research on extinction and spontaneous recovery?

What is the significance of the critical period in prenatal development?

Maeve parents notice that while her physical growth seems to occur gradually, her ability to understand abstract concepts appears to emerge suddenly at certain ages. Her parents wonder if this observation supports a continuous or discontinuous view of development. Which developmental pattern best explains Maeve's cognitive development?

In what way does Erikson's psychosocial stage of 'Identity vs. Role Confusion' relate to the concept of 'possible selves' in adolescent identity development?