Skill Terms Flashcards
Experimental methodologies
involves the use of independent variable(s) and random assignment to groups
Non-experimental methodologies
includes case study, correlation, meta-analysis, and naturalistic observations
case study
a non-experimental technique in which one individual or group is studied in depth in the hope of revealing universal principles
correlation
a measure of the extent to which two factors vary together, and thus of how well either factor predicts the other
meta-analysis
a statistical procedure for analyzing the results of multiple studies to reach an overall conclusion
naturalistic observation
a non-experimental technique of observing and recording behavior in naturally occurring situations without trying to manipulate and control the situation
hypothesis
a testable prediction, often implied by a theory
operational definitions
a carefully worded statement of the exact procedures used in a research study
replication
repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding can be reproduced
independent variable(s)
in an experiment, the factor that is manipulated; the variable that is being studied
dependent variable(s)
in an experiment, the outcome that is measured; the variable that may change when the independent variable is manipulated
confounding variable(s)
in an experiment, a factor other than the factor being studied that might influence a study’s results
sample
a subset of a population of interest that is selected for study with the aim of making inferences to the population. It is important to ensure that a sample is representative of the larger population
population
all those in a group being studied, from which samples may be drawn
representative sample
the selection of study units (e.g., participants, homes, schools) from a larger group (population) in an unbiased way, such that the sample obtained accurately reflects the total population
random sampling
a sample that fairly represents a population because each member has an equal chance of inclusion
convenience sampling
any process for selecting a sample of individuals or cases that is neither random nor systematic but rather is governed by chance or ready availability
sampling bias
a flawed sampling process that produces an unrepresentative sample
generalization
the process of deriving a concept, judgment, principle, or theory from a limited number of specific cases and applying it more widely, often to an entire class of objects, events, or people
experimental group
in an experiment, the group exposed to the treatment, that is, to one version of the independent variable
control group
in an experiment, the group not exposed to the treatment, contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment