In a study of adverse childhood experiences (ACEs), researchers surveyed 200 adults about their childhood trauma exposure. The following data shows the number of ACEs reported: 0 ACEs: 40 people, 1-2 ACEs: 80 people, 3-4 ACEs: 50 people, 5+ ACEs: 30 people. What is the median category of ACE exposure in this sample?

In a study of punishment effectiveness, researchers tracked student tardiness over 3 months. Group 1 received detention (added punishment) and showed 40% reduction in tardiness. Group 2 lost phone privileges (removed reward) and showed 35% reduction. Group 3 received both punishments and showed 45% reduction. Group 4 received verbal warnings only and showed 10% reduction. What type of punishment was most effective in isolation?

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 study monitored vital signs during a 30-minute meditation session. Subject 1's heart rate decreased 15%, breathing slowed 30%, and digestion increased 20%. Subject 2 showed minimal changes. Subject 3's metrics fluctuated randomly. Subject 4's vitals initially increased then gradually decreased. Which subject demonstrated the clearest activation of what system?

A therapist is assessing a client who reports feeling "down" most days for the past three years, with symptoms including poor appetite, low self-esteem, and hopelessness. The symptoms never meet full criteria for major depression. This presentation most closely aligns with:

What is the defense mechanism where unacceptable impulses are transformed into socially acceptable actions?

A researcher studies how children learn to read by following 100 students from kindergarten through third grade, measuring their progress every six months. Despite the comprehensive data, the researcher is concerned about historical events affecting the results. Which research method challenge is most relevant?

An experiment found that babies preferred a soft cloth-covered surrogate mother over a wire surrogate mother with food, demonstrating the importance of:

What is the primary function of emotions in social interactions?

Which of the following is a primary factor in the development of gross motor skills in toddlers?

All of the following are factors that increase attraction except

A psychology class tested the effectiveness of chunking versus no chunking in remembering sequences of numbers. Group 1 (n=15) learned numbers in chunks of three, while Group 2 (n=15) learned them as continuous sequences. After 24 hours, the data showed: Group 1 mean recall=8.2 numbers (SD=1.1), Group 2 mean recall=5.4 numbers (SD=2.3). What is the difference in variability between the two groups as measured by standard deviation?

What is the primary goal of projective tests in psychodynamic theory?

What role does person perception play in social interactions?

The Immigration Act of 1924, which established quotas based partly on intelligence test performance, most directly exemplifies which psychological concept?

A researcher uses factor analysis to identify the underlying structure of personality. This methodology reflects which key assumption of trait theories?

According to Erikson's psychosocial theory, what is the primary psychological risk when young adults fail to establish intimate relationships?

The blind spot in human vision occurs because:

Researchers conducted a study examining emotional responses across cultures. They showed participants from 10 different countries photographs of facial expressions and asked them to identify the emotion being displayed. The researchers found that while recognition rates were high for happiness (95%), they varied significantly for other emotions like fear (45-75%) and disgust (50-80%). What aspect of research design poses the greatest threat to the validity of this cross-cultural study?

During a neurological exam, a patient shows impaired emotional recognition but intact cognitive functioning. Which limbic structure is most likely damaged?