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RESEARCH METHODS Module 2
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What is the one easy way to improve a relationship? What makes people do the same stupid things repeatedly? Does emotional intelligence make a person smart? Is there a relationship between the decline in child play and the rise in mental illness?
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A method of learning about the world through the application of critical thinking and tools such as observation, experimentation, and statistical analysis Scientific Method
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Just common sense??? Opposites attract….. BUT WAIT! Birds of a feather flock together. Out of sight, out of mind… BUT WAIT! Absence makes the heart grow fonder. Nothing ventured, nothing gained. BUT WAIT! A penny saved is a penny earned.
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Psychology is an experimental science Claims MUST be supported by evidence SCIENTIFIC METHOD: 1. Form a research Question 2. Form a Hypothesis 3. Test the hypothesis 4. Analyze the results 5. Draw Conclusions & report findings
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Observations! What is it? What are the advantages? What are the disadvantages?
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Things to consider… Confirmation bias: tendency to focus on info that supports preconceptions Critical thinking: thinking that does NOT blindly accept conclusions Participant bias: participants act in a certain way because they know they are being watched Naturalistic bias: observing behavior in a naturally occurring environment (example: watching a couple out to eat at a restaurant) Shall we take a walk?!
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Who is Ms. Keaveney??
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Case Studies In depth study of ONE person
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Correlational Study Designed to discover if two variables are related to one another People that drink diet soda have a higher incidence of depression. Correlation does NOT equal Causation
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Surveys Techniques that questions a sample of people to collect information about their attitudes or behaviors Advantages? Disadvantages? Population Sample
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Children of two-parent families are more highly to graduate high school than children of divorced parents.
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Longitudinal studies: follow the same group of people over a long period of time Cross-sectional studies: compares people of different ages at one time
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Experiments! The ONLY method that allows us to draw conclusions about cause-and-effect relationships
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People that eat Nutella are happier than people that do not eat Nutella. Can we TEST this??? Hypothesis: a testable prediction about the outcome in research
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Important Concepts… Operational definitions Replication Independent variable Dependent variable Experimental group Control group Random assignment
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Any problems?? Hypothesis: Students that listen to music while they study perform better on exams than students that do not study with music.
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Can expectations REALLY affect studies??? Double-blind procedure Placebo
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Ethical Guidelines 1. Informed consent 2. The right to be protected from harm and discomfort 3. The right to confidentiality 4. The right to debriefing
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Statistics: Central Tendency Mean - average Median – middle number Mode – most occurring number
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Statistically Significant?? Ok…you run the experiment. You have the results. Do they actually matter? Do they show anything? Difference BETWEEN groups would occur by chance alone is no more than 5% **If we find a big difference between two large groups and small variations in results within each group…it’s statistically significant!**
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