PSYC 3110 1st Edition Lecture 4Outline of last lectureI. Research and EthicsII. 3 main types of Research A. ObservationalB Naturalistic ObservationC. Laboratory ObservationsIII. The start of Correlation StudiesOutline of Current Lecture IV. Continued CorrelationV. ExperimentsD. Control groupE. ExperimentF. IndependentG. Dependent variablesVI. Statistical Vocabulary- Correlation and causation: Can be due to many factors and changes in two variables can be dueto another (The ice cream and murder examples)- A variable could come in between two variables also (Intelligence Learning Ability Jobperformance)Experiments- One variable influences another to change in some way- Must have a control and experimental groupo Control group: the one that does not receive the treatmento Experiment group: the one that does receive the treatmento Independent variable: the variable we changeo Dependent variable: the one that we are interested in- Random assignment: randomly assigning people to the experiment (things helps control fordifferences between the participants so there isn’t more males then women)- Blindnesso Single blind studies:Participants are unaware of what experimental group they arein These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Double blind: participants and researchers are unaware of what people are in whatgroup (helps control biases)Basic Statistic Vocabulary- Median- middle value of a group of numbers - Mode-most common value in the group of numbers- Range- difference between the largest and the smallest number in the group of numbers- Mean- the average of all the numbers- Standard Deviation- measure of the variability so a series of numbers (how similar or differentthey are from on
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