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SCIENTIFIC METHOD RESEARCH METHODS ETHICS PSYCHOLOGICAL RESARCH
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THE SCIENTIFIC METHOD Psychologists systematically acquire knowledge and understanding about behavior and other phenomena of interest. The Scientific Method Question Create Hypothesis Conduct Research Communicate Findings Replicate
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QUESTIONHYPOTHESISRESEARCH COMMUNICATE FINDINGS REPLICATE
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THE SCENTIFIC METHOD THE QUESTION OBSERVATION, PRIOR RESEARCH, CREATIVITY/INSIGHT THE HYPOTHESIS FORMULATE AN EXPLANATION THE RESEARCH CREATE AN OPERATIONAL DEFINTION: a specific, testable procedure that can be measured and observed METHOD, COLLECT DATA, ANALYSIZE DATA
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THE SCIENTIFIC METHOD COMMUNICATE FINDINGS GET PUBLISHED, TALK TO COLLEGUES, MAKE POSTER PRESENTATIONS REPLICATE GET OTHER RESEARCHERS TO REPEAT YOUR RESEARCH WITH OTHER PARTICIPANTS
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HYPOTHESIS VS. THEORY HYPOTHESIS: A prediction stated in a way that allows it to be tested. Example: THEORY: An established, organized set of concepts that explain a phenomenon or set of phenomena based on multiple tests Example:
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METHODS OF RESEARCH ARCHIEVAL RESEARCH Research in which existing data, such as census documents, college records, online databases, and newspaper clippings are examined to test a hypothesis Pros: Relatively easy and inexpensive Allows a look at past events Particularly useful for unforeseeable events Cons: Quality of data Missing data
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METHODS OF RESEARCH NATURALISTIC OBSERVATION Research in which an investigator observes some naturally occurring behavior and does not make a change in the situation Pros: Sample behavior in the “natural environment” Good for developing hypotheses Cons Does not control environment
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METHODS OF RESEARCH SURVEY RESEARCH Research in which people chosen to represent a larger population (a sample) are asked a series of questions about their behavior, thoughts, or attitudes Pros: Straight-forward Can easily gather a lot of information Cons: Social acceptability bias People don’t always know their thoughts or attitudes
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METHODS OF RESEARCH CASE STUDY An in-depth, intensive investigation of an individual or small group of people When this method is used, the goal is often to apply the information learned about the individual or small group to improve our understanding of people in general. Pro: Allows for examining rare phenomena Cons: Findings are not always generalizable
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METHODS OF RESEARCH CORRELATIONAL RESEARCH Research in which the relationship between two sets of variables is examined to determine whether they are associated, or correlated. Variables: behaviors, events, or other characteristics that can change, or vary, in some way Correlation co-efficient: a statistical concept that describes the strength (0 to 1) and direction (+ or -) of a relationship between variables Ranges from – 1.0 to + 1.0
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RESEARCH METHODS GPAGPA Studying PartyingPartying Sleep Like PB&JLike PB&J Years of school
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RESEARCH METHODS EXPERIMENTAL RESEARCH Used to determine a cause-and-effect relationship between two (or more) variables by manipulating one and measuring the changes in the other. Independent Variable: The Manipulated Variable Dependent Variable: The Variable Measured for Change Has a hypothesis that predicts the effect the independent variable will have on the dependent variable
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RESEACH METHODS EXPERIMENTAL RESEARCH 2 Groups: Experimental or Control Random Assignment: Participants are assigned to the experimental or control group based on chance EXPERIMENTAL RESEARCH IS THE ONLY METHOD THAT CAN ESTABLISH CAUSE AND EFFECT
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RESEARCH METHODS EXPERIMENT PROCESS
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RESEARCH METHODS STATISTICAL FINDINGS Significant Outcome: Meaningful results that make it possible for researchers to feel confident that they have confirmed their hypotheses. Statistically Significant Vs. Practically Significant Findings
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THREATS TO AN EXPERIMENT IS IT GOOD RESEARCH OR NOT? Experimental Bias: Factors that distort how the independent variable affects the dependent variable in an experiment Experimenter expectations Participant expectations Third Variable Problem
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ETHICS IN RESEARCH AMERICAN PSYCHOLOGICAL ASSOCIATION (APA) CODE OF ETHICS All experiments must be reviewed by an independent panel before being conducted Institutional Review Board The protection of participants from physical and mental harm The right of participants to privacy regarding their behaviors The assurance that participation in research is completely voluntary
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ETHICS IN RESEARCH APA CODE OF ETHICS The necessity of informing participants about the nature of procedures before their participation in the experiment Informed Consent: A document signed by participants affirming that they have been told the basic outlines of the study and are aware of what their participation will involve. http://www.apa.org/ethics/code/ http://www.apa.org/ethics/code/
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