Three types of descriptive research

case study

naturalistic observation

Hawthorne effect

survey

sampling bias

population

random sampling

periodic sampling

wording effects

social desirability bias

self-report bias

correlation

correlation coefficient

variable

scatterplot

positive correlation

negative correlation

bidirectional problem

third-variable problem

illusory correlation

regression toward the mean

experiment

experimental group

control group

random assignment

independent variable

dependent variable

validity

confounding variables

placebo effect

single-blind procedure

double-blind procedure

experimenter bias

Main advantages of CASE STUDIES

Main advantages of NATURALISTIC OBSERVATION

Main advantages of SURVEYS

Main advantages of CORRELATIONAL RESEARCH

Main advantages of EXPERIMENTAL RESEARCH

Main disadvantages of CASE STUDIES

Main disadvantages of NATURALISTIC OBSERVATION

Main disadvantages of SURVEYS

Main disadvantages of CORRELATIONAL RESEARCH

Main disadvantages of EXPERIMENTAL RESEARCH

quantitative research

qualitative research