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Psychology Research Methods



• The general investigative purpose of a psychology study (why the researcher has decided to conduct an investigation) is called its aim.

• A hypothesis is a precise and testable statement of what the researcher predicts will be the outcome of the study. In an experiment this is called the experimental hypothesis.

• In a correlational study the hypothesis is called a research hypothesis, and it will predict a relationship between two variables.

• A research hypothesis is called an alternative hypothesis.

An alternative hypothesis is either:

• Directional (one-tailed): predicts the direction of the effect expected (e.g. ‘using visual imagery will improve how well words are recalled’), or

• Non-Directional (two-tailed): predicts an effect but does not specify its direction (e.g. ‘using visual imagery will affect how well words are recalled’).

• Every hypothesis also has a null hypothesis. This predicts that......

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Approximate Pages: 5 (250 words per double-spaced page)

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