Hypotheses

• An experimental hypothesis is a clear guess.
• Hypotheses are not written in past tense.
• Hypotheses are used in ALL research methods.
• With anything other than an experiment - experimental hypotheses is called a alternative hypothesis.
• Null hypothesis - no difference in dependent variable between independent variable + independent variable
• Simply states that the independent variable will not affect the dependant variable.
• Experimental/alternative hypothesis may be one tailed (directional) or two tailed (non-directional)
• Directional hypothesis - predict the affect of the IV on the DV
• Non-directional hypothesis - states there will be an effect but won't state the direction