Research Hypothesis
A specific, testable prediction about the relationship between two or more variables.
What is Research Hypothesis?
A hypothesis is an educated guess derived from theory or prior observation that posits an expected outcome. In quantitative research, it precisely states how an independent variable is expected to affect a dependent variable. Hypotheses must be falsifiable—meaning it must be logically possible to collect data that proves them wrong.
Why Research Hypothesis Matters
Hypotheses form the basis of inferential statistics. They allow researchers to transition from merely describing data to making probability-based claims about populations and testing theoretical predictions.
Example
Students who complete the mindfulness intervention (independent variable) will score significantly lower on the Beck Anxiety Inventory (dependent variable) than students in the control group.
Common Mistakes
- Formulating hypotheses after the data has been analyzed (HARKing - Hypothesizing After Results are Known), which invalidates statistical inference.
- Writing hypotheses that are too vague to be statistically tested or that lack clear operational definitions of variables.