control group - the one that doesn't get the treatment
correlational study - type of research that depicts a relationship between 2 variables
data information - basis of reasoning, discussion, and calculation
descriptive study - a research design that describes "what is"
experiment - a research design used to find the cause-effect relationships
experimental group - the one that gets the treatment
external validity - how generalizable the results are as it concerns her location and populations
extraneous - variable that may cause contamination of data
Heterogeneous- groups under study are very different or varied.
Homogeneous- groups that are very
similar.
independent variable - concept being studied that usually indicates the cause; the one being manipulated
dependent variable - the concept that the researcher is interested in studying
hypothesis - statement written by researcher that states the relationship between or among variables
inductive reasoning - qualitative
deductive reasoning - quantitative
Internal validity- the extent to which a study measures what it is supposed to
measure (accuracy within a study)
introduction - establishes the scope, context, and the significance of the research
limitations - identifies potential weaknesses of study
measures of central tendency - averages
mean - the arithmetic average
median - the middle value, half the scores above half scores below
methodology - systematic approach to a conduct of a process
mode - score that occurs the most
nullhypothesis - proposition to be tested statistically, experimental intervention has "no effect" meaning that the experimental group doesn't have results that differ from the results of a control group
operational definition - how a term is used in the study
participants - called respondents, their responses are the object of the study
principalinvestigator - oversees research
population - target group under investigation, the entire set under consideration
samples - drawn from population
purpose of the study - states the objectives and aims of the research
random - by chance
qualitative research - descriptive theory, naturalistic
quantitative - statistical evidence, experimental
Questionnaire -structured sets of questions on specified subjects that are used to gather
information.
random sample - everyone has the same chance to be assigned at any group
research - a systematic, objective way of generating facts
research design - the method for finding out what the researcher wants to know, experiment, and to correlate