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Kabotoff Psych 11 PPT #2. Correlation vs Causation When researching – be careful not to say x causes y when.

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Presentation on theme: "Kabotoff Psych 11 PPT #2. Correlation vs Causation When researching – be careful not to say x causes y when."— Presentation transcript:

1 Kabotoff Psych 11 PPT #2

2 Correlation vs Causation http://www.youtube.com/watch?v=lbODqslc4Tg When researching – be careful not to say x causes y when it can mean simply that they coincide...

3 Visual Prompts

4 Three types of Psych research 1. Causecausal relationships 1. Cause or causal relationships Your basic Cause and Effect type experiment Does changing a variable change the outcome? i.e. If you drink 16 cups of coffee with a shot of concentrated energy drink in each one, can you fall asleep?

5 Three types of Psych research Descriptive Research 2. Descriptive Research Investigates what already exists in a group of people or population Seeks to describe current variables, not look for change i.e. An opinion poll, or a poll about school satisfaction

6 Three types of Psych research 3. Relational Research Investigates the connection between two or more variables i.e. Study that looked at the proportion of males to females enrolled in Phys Ed class

7 Ask yourself a question... Is the research valid and reliable? http://video.about.com/psychology/What-Is-Validity- in-Psychology-Research-.htm http://video.about.com/psychology/What-Is-Validity- in-Psychology-Research-.htm Validity=does the experiment measure what it says it is measuring? Reliability=are the results consistent given the same variables?

8 And we’ll talk about ethics soon...

9 What is the difference between a theory and a hypothesis? Theory=well-established principle that has been developed to explain some aspect of the natural world arises from repeated observation and testing & incorporates facts, laws, predictions, and tested hypotheses that are widely accepted

10 Theory vs Hypothesis Hypothesis=a specific, testable prediction about what you expect to happen in your study For example, an experiment designed to look at the relationship between study habits and test anxiety might have a hypothesis that states, "We predict that students with better study habits will suffer less test anxiety." Unless your study is exploratory in nature, your hypothesis should always explain what you expect to happen during the course of your experiment or research. http://www.youtube.com/watch?v=7ffiWmALZc4


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