Complete Hypothesis and Operationalisation Activity Understand the importance of validity and peer review Be able to write all types of hypotheses; directional/experimental, non-directional and null. Complete Hypotheses (Directional and Non-Directional), IV and DV Does caffeine increase alertness? Does personality type influence the way in which people cross the street? Is smoking related to people’s attitude to risk? Do males and females differ in their ability to detect when someone is lying? Does age cause people’s reaction times to slow down? Then… OPERATIONALISE the IV and DV!

On your white boards define: Validity The degree to which an experiment or measurement is doing the job it was designed to do. Internal Validity: The extent to which the findings are really caused by the manipulation of the IV External Validity: The extent to which the findings can be generalised to other people (population) or other situations (ecological)

On your white boards: One study lacking internal and one lacking external validity

A ‘double blind’ procedure in which at least 2 people evaluate a research proposal based on scientific values.

Evaluation Game! Create an acronym or image story to remember these terms Generalisability Ethics Application Validity Reliability

Evaluation Game! Now apply them to the Abstract of Maguire et al (2000) Generalisability Reliability Application Validity Ethics

Now write your own… 3 Hypotheses IV + Operationalisation DV + Operationalisation Controlling Extraneous Variables Sample Design

Evaluation Game! Now apply them to each other’s studies Generalisability Reliability Application Validity Ethics