Hypotheses

Hypotheses

1. Experimental/Alternate hypothesis

   • a statement/prediction of what results you expect to find after your experiment
   • example
     • students who complete a memory test in the morning will recall more words than students who complete a memory test in the evening
       • IV =morning/evening DV = amount of words recalled "more" = prediction

2. every hypothesis needs a IV & DV

   • Independent variable
     • variable you can manipulate
   • dependent variable
     • variable you can measure

3. Null-hypothesis

   • a statement of no difference between variables
   • example
     • "There will be no difference in the number of words recalled from a list when students are tested in the morning than if they were tested in the evening"

4. Directional hypothesis

   • one-tailed hypothesis
   • predictions that state the direction the results will go in

5. Non-directional hypothesis

   • predictions that do not state the direction the results will go in
   • two-tailed hypothesis
   • there will be no difference...