Free IB Psychology check

After a stroke, a patient understands what is said to her but speaks slowly, with great effort and in very short phrases. Damage to which area best explains this?

In Kosfeld et al. (2005), men received oxytocin or a placebo by nasal spray and then played a trust game with real money. What did the oxytocin group do?

Bransford and Johnson (1972) gave participants a vague passage about washing clothes. Which group understood and recalled it best?

A bat and a ball cost 1.10 in total, and the bat costs 1.00 more than the ball. Many people answer that the ball costs 0.10. What does this error show?

In Tajfel's (1970) minimal group studies, schoolboys were put into groups on a trivial basis, such as a preference for one painter, and then gave rewards to other boys. What did they do?

After moving abroad, a young man stops speaking his first language, avoids his heritage community and adopts the customs of his new country. Which strategy is this?

Researchers want to interview people who have recently left a small religious group, and no list of former members exists. Which sampling technique fits best?

During a ten-minute observation, a researcher counts how many times each child shares a toy. What kind of data is this?

Caspi et al. (2003) studied the serotonin transporter gene and stressful life events in a New Zealand birth cohort. What did they find?

Stunkard et al. (1986) studied 540 Danish adults who had been adopted as children. Their weight class was strongly related to the BMI of their biological parents but not of their adoptive parents. What does this suggest?

McGarrigle and Donaldson (1974) repeated Piaget's number conservation task, but a "naughty teddy" disarranged the row of counters instead of the experimenter. Far more young children conserved. What does this suggest?

A refugee family speaks only its heritage language, socialises only within its own community and avoids the customs of the new country. Which acculturation strategy does this show?

A fitness app gives a badge after some workouts but not others, so users never know which workout will earn one. Which schedule of reinforcement is this, and what does it predict?

A driver can follow a podcast while driving on a quiet road, but struggles to drive while picturing the layout of a building he is describing to a passenger. How does the working memory model explain this?

A student wants to give a questionnaire to 14-year-olds in her school. Whose written consent does the guide require?