CRCJ 3001 Lecture Notes - Lecture 5: Dependent And Independent Variables, Internal Validity, Sleep Deprivation

• School: Carleton University
• Department: Criminology and Criminal Justice
• Course: CRCJ 3001
• Professor: Donna Millioux

Document Summary

Experimental research strategy: elements of causality, manipulation, control, dealing with confounds, some designs to avoid, experimental designs (ideal) Need to tease apart naturally interconnected variables in an experiment. Therefore, need to know that changes in one variable are directly. 2 sub goals: causality, manipulation, ruling out competing explanations, control. Extraneous variables: factors or variables- that are constantly changing and are not explicitly part of the experiment as designed by the researcher. Information that is easily transformed into images should be easier to store in memory and recall than information that is not easily converted into images. Researchers found that when they asked subjects to list the number of associated words, those with high imagery had more meaning than those with low imagery causing a confound on recall. Identifying extraneous variables that may be potential confounds: common sense, simple logical reasoning, past experience, past research.