Research – the good, the bad & the ugly

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Presentation transcript:

Research – the good, the bad & the ugly Chapter 2.1

Types of Research Naturalistic observation Case study Survey Longitudinal study Cross-sectional study Correlations and Explanations Experiment

Naturalistic Observation Watching subjects in their natural environment Record only observable behaviors Key: Do not be obvious

Survey Interviews Questionnaires

Longitudinal Studies Studying the same group for several years Determining whether behavior and/or feeilngs have changes

Cross-Sectional Studies Organize individuals into groups based on age Groups are randomly samples Members are surveyed, tested, or observed

Correlations & Explanations Observe people or animals Record observations in a descriptive study Correlation – how two sets of data relate to each other Positive correlation – both items increase or decrease together Negative correlation – as one item increases, the other item decreases No correlation – both items are unrelated

Positive Correlation

Negative Correlation

No Correlation

Experiment A test done on a group to determine something that is unknown All experiments have: Hypothesis Variables Experimental group Control group

Types of Research Naturalistic observation Case study Survey Longitudinal study Cross-sectional study Correlations and Explanations Experiment

samples A small group from a total population

Types of samples Random sample – each individual has an equal chance of being in the sample Stratified sample – all subgroups are equally represented in the sample

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