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Psych9.5.13Chapter2.docx

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Department
Psychology
Course
PSY-0001
Professor
Yvonne Wakeford
Semester
Fall

Description
09/05/2013 Chapter 2: Research in Psychology  Introduction to research: Nature/nurture Unifying theme: Psychology is EMPIRICAL Scientific method  Theory vs Hypothesis A theory are concepts observed and predictions about future events Hypothesis is what will happen if theory was correct. It’s a specific prediction of what should be observed.  Example 1:  Theory: humans have a dinner stomach and a desert stomach Hypothesis: If a human eats dinner until they are full, they still easily eat desert. Research would fail and the researcher would have to consider a new theory. Example 2: Theory: Mood affects helping behavior. People who are in a good ood will be more likely to help others,  than people who are in a bad mood.  Hypothesis: After finding a dollar, people will be more likely to agree to complete a survey than people who  did not find a survey.  Empirical Research  Design a study, collect data, analyze results, draw conclusions  Theory is supported, discarded, or revised/retested.  Research Methods: 1. Archival Studies Examining existing records of past events. Existing data Eg: Crime rates in certain cities  2. Case Studies An in­depth investigation of an individual subject (person). Then apply that information  Dangerous because its  limited to just one subject . For a case study to be valid, the subject has to  have something very very specific Eg: HM (Henry Molaison) He suffered from severe epileptic seizures. Doctors simply removed the legion that caused seizures BUT  problem… he could never store new memory from that moment onward. ­­­ therefore, that data is useful for  future studies 3. Correlational Studies Statistical measure of the extent to which two variables are associated “Correlation is not causation”  Positive   correlational study:  both variables decrease or increase together. +1 Eg: Having high SAT scores doesn’t cause a high GPA in college, but if you came into college with a 2400,  the likelihood is higher  No   correlation : no relationship between two variabl
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