OBSERVATIONS Flashcards
Behavioural categories
To conduct systematic observations, we need to break up this stream of behaviours into a set of components, called behavioural categories.
Behavioural categories should:
1) Be objective: Observer should not have to make inferences about the behaviour, categories must relate to actions.
2) Cover all possible components behaviours and avoid a ‘waste basket’ category (where you can include anything that isn’t already covered).
Time sampling
Observer decides on a time interval, notes any behaviours displayed during that time interval.
Strengths of time sampling
-More representative overtime as it allows for tracking of time related changes in behaviour.
-Easier and more manageable as it avoids having to record everything, you are just taking a sample.
Weaknesses of time sampling
-Behaviour may be missed if time samples are limited and important behaviour occurs outside the observation interval, affecting validity.
Event sampling
Noting everytime a particular behaviour of interest occurs, usually a list of behavioural categories is used and a count is kept of everytime they occur within observational period.
Strengths of event sampling
-Less likely to miss predefined events/ behaviours of interest.
-Records are easy to obtain and analyse as they are just totals
Weaknesses of event sampling
-Can be hard if lots of behaviour occurs at once, reducing validity
-Can miss events not coded for
-Gives no indication of relative time spent on each behaviour.
Structured observation
Has clearly defined system for recording behaviour, decided beforehand which behaviours are going to be observed and how they are to be categorised.
These behaviour categories are called a behaviour checklist.
Advantages of structured
-Easy to record; operational definitions can be developed in pilot study before data is collected to be certain they include all key actions.
-Manageable
-Easier to test inter-rater reliability (agreement between observers)
-Some control over observer bias
Disadvantages of structured
-Reductionist; simple definitions of behaviour may not convey sufficient meaning,e.g a lifted hand could be a wave or a threat? This lowers validity.
-Predetermined behavioural categories may be limiting if new behaviours become apparent in the study.
Unstructured observation
Researcher records all relevant behaviour but has NO system, behaviour studied is largely unpredictable.
Advantages of unstructured
-No limitations of specific categories, any relevant behaviours can be recorded= rich data, more complete (increases validity).
-Detailed descriptions of behaviours rather than simple categories meaning observations give more complete picture of situation.
Disadvantages of unstructured
-Harder to record everything, observers may miss/ignore important aspects.
-Harder to establish reliability.
-Open to observer bias, recording may be inconsistent and subjective without operational definitions.
Naturalistic observation
Recording spontaneously occurring behaviour in subjects own environment. Everything left as usual but structured techniques may be used.