experiment.","markscheme":"- Defines a quasi-experiment as a study where the independent variable (IV) is naturally occurring, pre-existing, or not directly manipulated by the researcher B1\n- Identifies the IV in Casey et al.'s study as being a 'high delayer' or 'low delayer' B1\n- Explains the consequence of this naturally occurring IV (e.g., participants could not be randomly allocated to conditions because their ability to delay gratification was an existing individual difference tracked from childhood) B1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"cf9a72f1-f486-4ecc-84bc-b65a9518e0fa","revisionId":"9a663a87-2898-4288-a3d7-b79e22f2da9a","questionNumber":null,"questionType":"LA","specification":"","difficulty":5,"difficultyBand":"medium","totalMarks":4,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"2f4dbfaa-f15d-453c-a651-7081e16ac1f9","label":null,"content":"Explain the clinical and neuroanatomical context that led to Sperry’s (1968) investigation into the split-brain phenomenon.","markscheme":"- Explains the concept of **hemispheric lateralisation**, which is the theory that the left and right hemispheres of the brain are specialized for different cognitive functions (such as language processing in the left hemisphere) B1\n- Outlines the neuroanatomical role of the **corpus callosum** as a bridge of commissural nerve fibres that normally allows rapid communication and integration of information between both hemispheres B1\n- Identifies the clinical background involving patients with severe, drug-resistant epilepsy who underwent a **commissurotomy**, a surgical procedure that severed the corpus callosum to stop abnormal electrical activity from spreading across hemispheres B1\n- Explains how this surgical group presented a unique scientific opportunity to study the isolated functions of each hemisphere independently without inter-hemispheric interference B1","marks":4,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"a_level_psychology__ocr","summaries":[{"id":"15670eb3-6cf6-4885-8877-f75a2ea0f866","difficultyBand":"medium","calculatorUse":null,"totalMarks":4},{"id":"15bc9297-adfe-4692-9d11-0d6197aef9fc","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"1dc2e798-2cf4-442d-95e1-7d7f7c5b92d8","difficultyBand":"hard","calculatorUse":null,"totalMarks":5},{"id":"2600e4c8-3e4a-476d-8ade-d2bfaf2ff1fe","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"33ce5083-358b-49ed-a353-142d53ba77b8","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"35e8dfab-0e7b-4a5b-a544-8fe3221d054f","difficultyBand":"hard","calculatorUse":null,"totalMarks":10},{"id":"3c4e7954-917f-458b-a6b3-a1a989620b06","difficultyBand":"medium","calculatorUse":null,"totalMarks":4},{"id":"44f84719-5517-4ae1-ab26-4d8a96c58c17","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"4667a753-3b28-4bef-a502-46db5735995d","difficultyBand":"hard","calculatorUse":null,"totalMarks":10},{"id":"49b387a6-72ca-4fa7-8075-c274f67dd232","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"4b003010-788b-495e-8455-ef33fc262d22","difficultyBand":"hard","calculatorUse":null,"totalMarks":8},{"id":"5a4b6cb3-9d50-4435-9b01-c7a7340bca80","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"5e12e4c6-371b-423b-875f-6719a1ac6506","difficultyBand":"hard","calculatorUse":null,"totalMarks":10},{"id":"66a3d0b1-3b35-4bf5-899c-c248fda9f3b0","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"6efeca5f-13b2-46f3-a0ab-8e468ec155de","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"70be0dea-bf31-4c4f-9a37-a31af92e5e5c","difficultyBand":"hard","calculatorUse":null,"totalMarks":10},{"id":"71ddb37b-6b5f-4272-adb7-f7c838ef5b3d","difficultyBand":"medium","calc

Regions of the brain

Question 17

Regions of the brain Questions

Regions of the brain

Question 17

Regions of the brain Questions