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Research Methods

3 Types of Experiment -

Lab - controlled experiments that are carried out by a researcher in artificial conditions such
as a lab, so the researcher can control the independent variable.
The procedures can be easily repeated

It is easier to control confounding variables and other variables


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Research Methods

Measures strength of relationships in a precise quantitative way (numerically)

This allows for the measurement of many variables (environmental factors)and the
relationships between them

Not a proper research method - who's to say it is correct or that variables are
connected in some way??

It is impossible to…

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Research Methods

It is simple and easy to analyse the quantitative data gained from closed questions

Very quick and large amounts of information can be collected cheaply from lots of
people in a short time

Easy to circulate

Can be very good when combined with interview as you get qualitative…

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Research Methods

variables including temperature, noise and time of day; and experimenter effects including the way
the question is phrased, the way they respond to the person and if they are bias.

Ecological Validity - when the experiment is valid for the whole population outside of the experiment
setting. Ecological…

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Research Methods

specific situations where a matching process is highly desirable in order that experimental
success can be achieved

Ways of Collecting Data -

Time Sampling - when behaviour is recorded at fixed time intervals.

Event Sampling - when each separate or new event is recorded as it occurs.


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Research Methods

Range: highest value - lowest value Median: the one in the middle when they are put
into chronological order. This doesn't take all the
data into account.

Inter-quartile Range: upper quartile (75%) - Mean: add them all up and divide them by how
lower quartile (25%) many there…


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