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Mizzou PSYCH 1000 - Hawthorn Effect

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Previous Lecture Outline1) hawthorn effectnon specific response to any changeneed active and control group2) experimenter expectancy(Rosenthal effect)observer interprets behavior so that it is consistent with his/her expectationexpectations lead to change in subject’s behaviorhow to prevent expectancy effects?Double blind testNeither the subject nor the experimenter know what is being tested3) inferential statisticsis difference just due to chance?Does difference reflect impact of I.V?Result deemed unlikely to be due to chance are statistically significantQualsi-experimental designsWhen it is impossible or unethical to manipulate variablesHas no random assignmentsUse pre existing groupsCan’t randomly assign subjects to conditionGender differenceAgeDrug useProblem: can’t determine casual factors confoundsCerebral Hemispheres2 halves of cerebrumwrinkled surfacegyri- bumpssulci- valleyscerebral cortexthe outer layer of the cerebral hemisphereseach cerebral hemisphere has four lobes1) frontal2) parietal3) occipital4) temporalcorpus callosumconnections between the left and right hemisphereFunctions of BrainPhrenologyCorrelating bumps on the skull with mental traits and personalityScientific studies(Phineas Gage study)prefrontal cortexdamaged major personality changessocial deficitscorrelational studies: observe behavior while measure brain activityrecording technique: EEGmainly animalsintracranial recording electrodePSYCH 1000 1st Edition Lecture 6Previous Lecture OutlineI. self report measuresa. prosb. consc. typesII. developmental designsa. longitudinali. prosii. consb. cross sectionali. prosii. consIII. correlationala. positiveb. negativec. why?IV. Experimentala. Controlb. Comparisoni. Experimentii. Independent variableiii. Dependent variableiv. Experimental groupv. Control groupc. Confoundi. How to fix itCurrent Lecture Outlined. hawthorn effecte. experimenter expectancyf. inferential statistics V. qualsi-experimental designsChapter ThreeI. Brain and BehaviorII. Cerebral hemispheres a. Cerebral cortexb. Corpus callosumIII. Functions of braina. Phrenology b. Scientific studiesc. Correlational studies Current LectureThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- 1) hawthorn effecto non specific response to any changeo need active and control group- 2) experimenter expectancy o (Rosenthal effect)o observer interprets behavior so that it is consistent with his/her expectationo expectations lead to change in subject’s behavior o how to prevent expectancy effects? Double blind test Neither the subject nor the experimenter know what is being tested - 3) inferential statistics o is difference just due to chance?o Does difference reflect impact of I.V?o Result deemed unlikely to be due to chance are statistically significant - Qualsi-experimental designso When it is impossible or unethical to manipulate variables o Has no random assignmentso Use pre existing groups Can’t randomly assign subjects to condition Gender difference Age Drug use  Problem: can’t determine casual factors confounds Cerebral Hemispheres- 2 halves of cerebrum - wrinkled surfaceo gyri- bumpso sulci- valleys- cerebral cortexo the outer layer of the cerebral hemisphereso each cerebral hemisphere has four lobes 1) frontal 2) parietal 3) occipital 4) temporal- corpus callosum o connections between the left and right hemisphere Functions of Brain- Phrenologyo Correlating bumps on the skull with mental traits and personality - Scientific studieso (Phineas Gage study)o prefrontal cortex damaged major personality changes  social deficits - correlational studies: observe behavior while measure brain activity- recording technique: EEGo mainly animals o intracranial recording


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