PSY101 notes week2 for MSU Lucas
PSY101 notes week2 for MSU Lucas PSY101
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This 2 page Class Notes was uploaded by Kayo Zhang on Friday January 15, 2016. The Class Notes belongs to PSY101 at Michigan State University taught by Dr. Richard Lucas in Fall. Since its upload, it has received 60 views. For similar materials see Introductory Psychology in Psychlogy at Michigan State University.
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Date Created: 01/15/16
PSY101 01/20 Lecture 3 Finish Intuition and Observation Correlations Experimental Method A Demonstration Finish Reading Chapter1 USING INTUITION AND OBSERVATION AS THE STARTING POINT Theory An explanation using an integrated set of principles that organizes and predicts observation. Hypothesis A testable prediction Often implied by a theory Not in book; agreed upon by (almost) all CONDUCTIGN RESEARCH Operational Definition A statement of procedures (operations) used to define research variables. Examples An example of operational definition of the term weight of an object, operationalized to a degree, would be the following: "weight is the numbers that appear when that object is placed on a weighing scale". According to it, the weight can be any of the numbers shown on the scale after, including the very moment the object is put on it. Clearly, the inclusion of the moment when one can start reading the numbers on the scale would make it more fully an operational definition. Nonetheless, it is still in contrast to those.purely theoretical definitions THE RESEARCH PROCESS Theories --hypothesis—research observation—generate of refine -- theories OBSERVATION GETS US HALF WAY THERE Two problems We can draw flawed conclusion We are bad statisticians PROBLEM Our ability to understand patterns in the world is limited. We need statistics. UNDERSTANDING STATISTIC Think in Pictures Scatterplot PSY101 01/20 A graphed cluster of dots, each of which represents the values of two variables The slope of the points INTERPRETING CORRELATION MAJOR THEME #1 Correlation Does Not equal Causation. #1 SOULUTION The investigator manipulates one or more factors (independent variable) to observe their effect on some behavior or mental process (dependent variable) The experiment controls for other relevant factors by using FEATURES OF AN EPERIMENT Random assignment Independent variable The experimental factor that is manipulated The variable whose effect is being studied Dependent Variable What you measure and what is affected in the experiment. The dependent variable responds to the independent variable.
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