Hypotheses

• Non-directional hypothesis

  An experimental hypothesis that states there will be a clear difference but that does not specify which direction an experiment will go in. Also known as two-tailed.

  e.g:

  There will be a significant difference between the number of words recalled correctly (out of 10) between male and female participants
• Directional Hypothesis

  An experimental hypothesis that states there will be a clear difference and is specific about which direction it will go. Also known as one-tailed.

  e.g:

  Female participants will correctly recall more words (out of 10) than male participants.
• What are hypotheses formed using

  Existing research and inferences
• What is an experimental hypothesis

  A prediction of the expected outcome of the research
• What is a null hypothesis

  A hypothesis that is written in case the experimental hypothesis fails. It means there is still something for the researcher to write up after the experiment.

  e.g: There will be no significant difference between the amount of words correctly recalled (out of 10) between male and female participants. Any differences found will be due to chance
• how many hypotheses are written for every experiment

  two
• In a hypothesis what should the variables be?

  operationalised