Unformatted text preview: • Tests must be reliable and valid. • Researchers use experiments to collect information about causal relationships between variables. • In experiments, researchers include experimental and control groups . • Bias is the distortion of results by a variable . • Types of bias include sampling bias , subject bias , and experimenter bias . Ethical Considerations • Psychologists must consider ethical norms when doing research involving humans or animals. Interpreting Data • Researchers analyze and interpret the data they’ve collected by using descriptive statistics and organizing their information in histograms or bar graphs . • Researchers use inferential statistics to determine the likelihood that a result is due simply to chance. • Statistical significance means that a result is probably not due to chance....
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This note was uploaded on 01/23/2012 for the course PSY PSY2012 taught by Professor Scheff during the Winter '09 term at Broward College.
- Winter '09