Aims and hypotheses

Which of the following statements about aims and hypotheses is correct?

• An aim provides an overview of the purpose of the study

• A hypothesis provides an overview of the purpose of the study

• An aim provides a prediction on what might be found

• A hypothesis provides a prediction on what might be found

To investigate the relationship between stress and illness is an example of:

• An aim

• A hypothesis

All variables in a hypothesis must be o____________

A __________ hypothesis for an experiment would predict no difference in the dependent variable between conditions of the independent variable

A null hypothesis for correlational research would predict what direction of correlation between two co-variables?

• Positive correlation

• Zero correlation

• Negative correlation

A null hypothesis states that if there is a difference/relationship, it must be due to __________

"There will be no difference in the number of hours slept at night between participants who consume 30mg of caffeine and participants who consume 0mg of caffeine and, if there is, it is due to chance". What type of hypothesis is this?

• A non-directional hypothesis for experimental research

• A null hypothesis for experimental research

• A non-directional hypothesis for correlational research

• A null hypothesis for correlational research

"There will be no relationship between scores on a stress questionnaire and the number of data taken off work due to illnesses and, if there is, it is due to chance". What type of hypothesis is this?

• A non-directional hypothesis for experimental research

• A null hypothesis for experimental research

• A non-directional hypothesis for correlational research

• A null hypothesis for correlational research

An ___________ hypothesis predicts a difference/relationship and there are two types: directional and non-directional.

A __________ hypothesis predicts a difference/relationship and states the direction of this predicted difference/relationship.