GenPsychScientificMethodsPart2

GenPsychScientificMethodsPart2 - Class Outline Operational...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Class Outline Operational definitions. Sampling. Drawing conclusions. Research methods in psychology. Describing and interpreting data. Making Observations An operational definition specifies the operations used to measure something. For example: Variable Measure(s) Stress 1) Heart and respiration rates. 2) Self-ratings of tension and anxiety. Hunger Number of hours since eating A measure must be: Reliable : Produces consistent measurements. Valid: Actually measures the variable Sampling: Selective Observation Usually, research studies take samples from a limited portion of the entire population. The sample must be representative of the population in order for the results to be generalizable to the entire population of interest. Drawing Conclusions Consider other interpretations. If the observations are inconsistent with the hypothesis: Then the hypothesis can be rejected. If the observations are consistent with the predictions of the hypothesis: Then the hypothesis might be true, but there may be other explanations that are just as good or even better.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Research Methods Used in Psychology Descriptive research. Correlational research. Experimentation. Techniques for examining the physical structure and processing of the brain. Next lecture, when we discuss the brain. Descriptive Research Descriptive research involves carefully observing and describing phenomena. It is a first step that provides data and possibly ideas for further scientific work. Disadvantages: The presence of an observer can alter the behavior of the observed persons or animals. Observational techniques cannot infer the cause(s) of behavior. Methods of descriptive research: Naturalistic observation. Case histories. Survey research.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/03/2008 for the course PSYCH 101 taught by Professor Brill during the Fall '07 term at Rutgers.

Page1 / 6

GenPsychScientificMethodsPart2 - Class Outline Operational...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online