Answer the following questions:
Is this a causal or an associative hypothesis?
Is the hypothesis directional or non-directional?
What would be the null hypothesis for this study?
Psychologists want to investigate if there is a correlation between how interested a person is in cars and their driving skills.
Suggest an appropriate null hypothesis for this study.
How could ‘driving skills’ be measured in this study?
Evaluate the measurement of driving skills you suggested for this study.
Suggest an appropriate sampling method to be used in this study, justify your answer.
Give one strength and one weakness of the sampling method you have chosen for this study.
Why was the patient’s blood
pressure recorded before he drank the coffee?
From the data presented in the
previous slide, draw conclusions about the
affects of caffeine on blood pressure.
Would these conclusions be
considered as a possible basis for a theory?
Explain your answer.
What would the null hypothesis
for the experiment presented on the
previous slide?
From the data presented in the
previous slide, draw conclusions about the
affects of smoking on blood pressure.
http://www.onetwentyovereighty.com/blood-
pressure/blood-pressure-experiments/
What are the problems/limitations with this experiment?
Questions 9 and 10: Would the two
experiments presented in this PowerPoint
be considered scientific or nonscientific
reasoning? Explain your answer.
