Psych Research Methods

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Aim

To investigate the effects of…

Hypothesis

IPAD

It was hypothesised that the population will direction the DV as compared to the control group.

Random Errors - Precision

• Creates unpredictable variations in measurement process and results in a spread of readings

• Do not follow pattern as they cause one measurement to differ slightly from the next

Controlling for random errors

• Making more or repeated measurements and calculating a new mean

• Increasing sample size

• Refining measurement method or technique

Systematic Error - Accuracy

• Cause readings to differ from true value by a consistent amount each of a measurement is made

• All readings are shifted in one direction from the true value

Controlling for Systematic errors

Being familiar with limitations of instructions and experience their correct use