ABSTRACT
Hypothesis testing The formal expression of a research hypothesis is always in terms of two related hypotheses. One hypothesis is the experimental, alternative or research hypothesis (often shown as HA or H1). It is a statement of what the researchers predict will be the outcome of the research. For example, in Chapter 9 we looked at a study that investigated the relationship between the speed with which people could speak a list of words (articulation speed) and memory for those words. In this case, the research hypothesis could have been: there is a positive relationship between articulation speed and short-term memory. The second hypothesis is the Null Hypothesis (H0). It is, generally, a statement that there is no effect of an independent variable on a dependent variable or that there is no relationship between variables. For example, there is no relationship between articulation speed and short-term memory.
