Practice Test 4 - MCAT Psychological, Social, & Biological Foundations of Behavior

20 questions. Answer them in any order, then submit to see your score and every explanation.

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1. A participant earns $1 for completing the first survey they submit after exactly 7 days have passed since the last payment (fixed interval 7 days). They have access to the survey portal daily. Which submission pattern is most likely over several weeks?
2. A sociologist compares two countries' age structures. Country C is in Stage 2; Country D is in Stage 4. Country C 80+ | | 60-79 | | 40-59 ||| 20-39 |||||| 0-19 |||||||||||| Country D 80+ |||| 60-79 |||||| 40-59 ||||||| 20-39 |||||| 0-19 ||||Based on the pyramids, which trend is most likely to occur?
3. Two classmates, Devin and Noor, are assigned to the same group project. During the presentation, Devin forgets a key point and pauses for several seconds. Afterward, Noor tells another classmate that Devin "is not confident" and "doesn't prepare." Devin later says he paused because the classroom projector briefly froze on the wrong slide and he was trying to match his notes to the corrected slide order. Noor also mentions that she felt nervous during the presentation but says her own mistakes were due to "bad timing" and "the room being too hot." Which attribution error is most exemplified by Noor's interpretation of Devin's pause?
4. In a research lab, a supervisor evaluates an intern, Riley, who successfully completes a difficult data-cleaning task ahead of schedule. The supervisor says Riley is "clearly talented" and "works hard." The following week, Riley makes an error in labeling files after being assigned two urgent tasks at once. The supervisor tells another staff member that Riley is "careless" and suggests the earlier success was "probably because the task happened to be straightforward." Riley notes that the file-naming rules were changed midweek and that the lab's shared drive was reorganized. The supervisor does not address the change in rules. Which attribution error is most exemplified by the supervisor's shifting interpretation of Riley's performance?
5. A contemporary campaign seeks to remove lead pipes in older housing. The most affected blocks are low-income, but the campaign's rapid growth occurs after a local foundation funds a coordinator and a neighborhood association shares a contact list for canvassing. Leaders cite resource mobilization theory. Which principle best explains the collective action described?
6. A content analysis examines how a popular streaming series portrays adults experiencing homelessness. Across 20 episodes, coders rate whether a homeless character is depicted as (i) primarily responsible for their situation (individual blame framing) or (ii) constrained by structural factors (housing costs, job loss). After viewing a montage of clips, a community sample completes a resource-allocation task dividing a fixed city budget between "shelter services" and "law enforcement." Viewers randomly assigned to the individual blame montage allocate a larger share to law enforcement than viewers assigned to the structural factors montage. Which effect is most consistent with the media portrayal described?
7. A vestibular-kinesthetic integration study tested how people estimate their body tilt. Participants stood on a platform that slowly tilted $5^\circ$ to the right while they wore a backpack with a lateral weight that pulled the torso slightly rightward. Vision was blocked. Some participants reported a stronger sense of rightward tilt than the platform angle alone would suggest, and they made larger corrective shifts. Which outcome would best illustrate integration of kinesthetic and vestibular senses in this situation?
8. A researcher notes that some participants can describe a demonstrated dance move accurately but fail to perform it. The researcher frames this as a distinction between learning through observation and performance of the learned behavior. Which observation best supports this distinction?
9. A high school district notes a gradual increase in students reporting diverse gender identities. The district considers updating forms, restroom access policies, and staff training. The district frames the issue as a demographic shift in gender composition that may influence social interactions, perceived belonging, and peer norms. Which statement best reflects the impact of increasing gender diversity on the school's social environment?
10. Two classmates met for the first time to plan a study schedule. Classmate 1 stood relatively close while speaking and maintained steady eye contact. Classmate 2 repeatedly stepped back and glanced away. Afterward, Classmate 1 reported that Classmate 2 was "unfriendly," while Classmate 2 reported that Classmate 1 was "pushy." A researcher noted that both classmates used their usual interaction style and that neither intended disrespect. Which cultural factor most affects the communication method described?
11. A research team tested photoreceptor adaptation. Participants sat in a dim room for 20 minutes, then a faint light was flashed. Detection improved over time in the dark. In a separate condition, participants remained in bright light and detection of the same faint flash was poor. Which statement best supports the role of the sensory mechanism responsible for these results?
12. A clinician assessing neuropathy uses von Frey filaments to test absolute threshold for touch on the plantar surface of the foot. Each filament applies a known force; the clinician records whether the patient reports feeling the touch. The threshold is defined as the force detected on 50% of trials. Compared with age-matched controls, a patient with suspected peripheral neuropathy detects the stimulus less often at each force level. Which interpretation is most consistent with the absolute threshold framework?
13. A lab study tested whether increasing GABAergic signaling alters acute stress reactivity. Healthy participants received either a single dose of a benzodiazepine (a positive allosteric modulator at GABA-A receptors) or placebo before completing a public-speaking stressor. The investigators measured startle potentiation and recorded fMRI responses in the central nucleus of the amygdala (CeA), a region implicated in coordinating fear expression. Relative to placebo, the benzodiazepine group showed reduced startle potentiation and reduced CeA BOLD response during the speech preparation period, without changes in task comprehension. Which behavior change would be expected following neurotransmitter modulation?
14. A vestibular-kinesthetic integration study measures perceived tilt during slow platform rotations. Participants stand on a platform that tilts a small amount while they keep their head upright. In one block, participants lightly touch a stable handrail with one fingertip; in another, they do not touch anything. Vision is occluded. Light touch reduces reports of perceived tilt and reduces corrective body movements, even though the touch provides negligible mechanical support. Which outcome would best illustrate the integration of kinesthetic and vestibular senses? A Reduced perceived tilt with light touch because additional somatosensory/proprioceptive cues help disambiguate vestibular signals about body orientation. B Increased perceived tilt with light touch because vestibular signals are suppressed whenever proprioceptive input is present. C No effect of touch because vestibular information alone determines perceived orientation when vision is blocked. D Reduced corrective movements prove that the vestibular system is unnecessary for balance and that fingertip touch fully replaces it.
15. A memory clinic evaluates two patients. Patient 1 shows early prominent visuospatial deficits and fluctuating attention, with episodes of vivid visual hallucinations. Patient 2 shows early impairment in learning new information and progressive difficulty with instrumental activities of daily living, without hallucinations. Both have similar scores on a brief screening test, so the clinician uses symptom patterning to guide diagnosis and counseling. Which feature would most strongly support a diagnosis for Patient 1 that differs from Patient 2?
16. A longitudinal study follows children with early behavioral inhibition and finds that those with inhibited temperaments are more likely to develop social anxiety symptoms in adolescence. The association is stronger when a biological parent has a history of social anxiety, but inhibited children without that family history still sometimes develop symptoms. Which interpretation best fits the biological basis of the observed social behavior?
17. A primary care clinic applies the health belief model to improve colorectal cancer screening. Many patients agree screening is beneficial but report avoiding it because they are embarrassed and worry the test will be painful. Which program change best targets the limiting construct?
18. According to Max Weber's thesis in The Protestant Ethic and the Spirit of Capitalism, which religious value was most crucial in fostering the development of early capitalism?
19. A clinic assessed glycemic control (HbA1c < 7%) among adults with type 2 diabetes. Researchers used intersectionality to examine how gender identity and housing stability jointly relate to outcomes. Percent at goal: - Cis men, stable housing: 58 - Cis men, unstable housing: 41 - Trans/nonbinary, stable housing: 52 - Trans/nonbinary, unstable housing: 27 Based on the data, which conclusion about health disparities is most consistent with intersectionality?
20. In a cross-species observational learning study, juvenile chimpanzees watch an adult use a stick to extract termites from a mound. Some juveniles observe from close range; others are farther away with a partially obstructed view. Later, juveniles are given sticks and access to a mound. The researchers emphasize that observational learning depends on adequate access to the modeled behavior. Which result is most consistent with this principle?

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