PSY 1101 Lecture : PSY 1101 Lecture 2.doc

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ceriseshark335

25 Mar 2012

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The only kind of research that will allow you to study cause and effect relationships and draw inferences from this; experimental research / studies deal with independent and dependant variable (language is quantified) Descriptive and co-relational research does not allow you to do this. Independent variable will cause a change in another variable; it influences and affects other variables. Dependent variable is being changed / affected / influenced by another variable (the independent variable) This is the variable that the researcher measures. Example: lipitor lowers cholesterol (a cause and effect relationship) With experimental research the researcher (1) manipulates the independent variable and (2) controls all other independent variables ; thus, experimental research allows you to talk about cause and effect relationship. The researcher creates at least 2 or more levels of the independent variable. The 2 groups in the study include the experimental group and the control group (which is always needed) Running on the treadmill is the independent variable.

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1) A doctor and his assistant are studying patients with visuospatial neglect. They 36 patients who just had strokes that damaged their right hemispheres. 16 of these patients have been diagnosed with visuospatial neglect based on their attention test score of 53 or less (normal test score is <236 ). These visuospatial neglect patients recovery is then tracked over a period of 2 weeks, that is their attention test score are observed after varying periods of time. All the patients recover expect 6 who seem to have made no recovery. a) What is a plausible hypothesis for this study? b) What is the independent variable? c) What is the dependent variable? d) Is this study an experiment? Explain e) What can u infer about the recovery from visuospatial neglect

cerisecrab872

7. Which of the following methods is most helpful for clarifying cause and effect relationships? a correlational research b. the survey c. naturalistic observation d. the experiment

17. A psychologist is studying the effects of orange juice on the prevention of colds. She has one group drink a glass of orange juice every day for the month of December. A second group drinks a glass of orange juice once a week during December, while a third group is not given any orange juice at all during this time period. Previous medical histories were obtained for all the participants. In January, she records how many colds each participant gets over the entire month. In this study, the independent variable is A) the severity of the colds in January B) the number of colds each participant got in January C) the prior medical histories D) drinking orange juice every day E) the amount of orange juice consumed

lemoncat920

PSY 1101 Lecture : PSY 1101 Lecture 2.doc

PSY 1101 Full Course Notes

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