Research Methods Flashcards
(33 cards)
Theory
General set of ideas about the way the world works
Hypothesis
Specific prediction about the relationship between the variables involved in the theory
Research method
Determines the way in which the hypothesis will be measured
Collecting data
Take measurements of the outcomes of tests
Analyze data
Understand the data and discover trends or relationships between the variables
Report findings
Publish articles in scholarly journals
Revise theories
Incorporate new info into our understanding of the world
Anecdotal evidence
Evidence gathered from self experience or others
Experiment
Scientific tool used to measure the effect of one variable on another
Independent variable
Variable being manipulated by scientist
Dependent variable
Variable being observed by scientist
Confounding variable
Variable other than the independent variable that has effect on the results
Within subjects design
One person acts as the control group and the experimental group
This can be time consuming, costly and practice effects may occur
Between subjects design
One group acts as control group and one acts as experimental
Double blind
Participants and experimenters don’t know which group is which
Subject bias
Participants actions in an experiment influence the results outside of the manipulations of the experimenter
Blinding
Participants don’t know which group they are in
Experimenter bias
Actions made by the experimenter intentionally or not to promote the result they want
Descriptive stats
Present info about data at a glance to give you an overall idea of the results of an experiment
Frequency distribution
Type of graph illustrating the distribution of how frequently values appear in the data set
Normal distribution
Distribution with characteristic smooth symmetrical bell shaped curve containing single peak
Inferential statistics
Stats that allow us to use results from samples to make inferences about overall underlying populations
T test
Statistical test that considers each data point from both groups to calculate the probability that two samples were drawn from the same population
P value
Value expressing the probability calculated by t test