Research methods Flashcards
(32 cards)
What is content analysis?
- Turning qualitative data into quantitative data.
- Look for recurring themes and tally/count them up to turn them into data.
What are two strengths of Content analysis?
-Flexible method; can be adapted to produce both quantitative and qualitative data. It is a flexible approach as can be suited to aims of the study or research.
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What makes psychology a science?
- replicability; results are consistently the same.
- objectivity; Data should be free from interpretation. for example many memory experiments. examples of unobjective research includes Frued and Zimbardo.
- empirical method; Any method that gives you observable data. Experiments and observations are empirical. e.g content analysis is not empirical.
- hypothesis testing; Whether a hypothesis can be directly tested. For example learning theory can be tested, however Evolutionary thoery can not.
- Theory construction; Has to falsifiable
What can be done to reduce confounding variables and extraneous variables?
- Random allocation
- Counterbalancing- test-retest, mix up condition to rid of order effect.
- Randomisation
- Standardisation; e.g. standard questions, environment and same instructions.
What are behavioural categories?
-Behaviours chosen before a study and these behaviours are counted to see how many times they happen.
What is event sampling?
-Watching a natural setting and recording when something happens
What is time sampling?
-watch and record every nth min/hour to observe behaviour.
What are the points that need to be made when reporting psychological research?
- Abstract (summary of study, usually 1 paragraph)
- Introduction (Writes about similar research in the same field and explain study briefly)
- Method
- Result
- Discussion
- Reference
What is involved with the method section?
- Design
- Procedure (step by step exactly what you do)
- Method
- Materials
What are the different levels of measurement?
- nominal; categories
- Ordinnal (can order)
- Interval (natural and with interval intervals, e.g time/space)
What are some strengths of controlled observations?
- High replicability as other researchers can conduct same observation by using same observation schedule. Increases reliability of a study.
- The data obtained from structured observations is easier and quicker to analyze as it is quantitative; less time-consuming method compared to naturalistic observations.
What is one limitation of controlled observations?
-Low internal validity; participants may suffer from demand characteristics or the Hawthorne Effect (the phenomenon whereby participants change behaviour as they know they are being observed)
What is a type 1 error in terms of stats tests?
-Saying you have a significant result when your result is not significant.
For example they might set the bar too low for a significance test.
-Reject the null hypothesis where they should in fact accept the null hypothesis.
What is a type 2 error in terms of stats tests?
- Type 2 error is when there is a significant result but a researcher accepts the null hypothesis.
- They might have set the bar too high and the significance was not recorded.
What is the difference between a hypothesis and an aim of a study?
A hypothesis is a proposed explanation of something that has to be verified and tested before it can be widely accepted as fact.
An aim while is the goal or the purpose of the process.
-A hypothesis cannot always be right, but an aim must always be true and specific in order to effectively prove a hypothesis.
What makes a theory strong?
-If it can survive the most attempts to be falsified.
Why must a hypothesis always be accompanied by a null hypothesis?
- A null hypothesis is the opposite of the hypothesis.
- The null hypothesis means the hypothesis can be tested and falsified as it shows the alternative theory and gives way for the original hypothesis to be proven wrong.
How can a scientific theory be ‘trusted’?
-It can be be ‘trusted’ if findings from it are shown to be repeatable across a number of different contexts and circumstances.
How can replication lead to higher validity?
-By repeating a study over different contexts and crincumstacnes we can measure the extent to which findings can be generalised.
What is objectivity in psychology?
Which methods in psychology are thought to be most objective?
- A researcher must strive for objective results, by that keeping a ‘safe-distance’ when conducting research and not letting personal beliefs and bias ‘discolouring ‘ data obtained from research.
- Methods in psychology that are associated with greatest level of control (e.g. lab experiments) are thought to be most objective.
What is Karl Popper’s Falsification Principle?
- Distinguishes between science and non-science.
- For a theory to be considered scientific it must be able to be tested and conceivably proven false.
- For Popper science should attempt to disprove a theory, rather than attempt to continually support theoretical hypotheses.
- He denied induction as it can not yield certainty, always the future possibility that an observation could refute a theory or principle.
What is a theory in psychology?
-A theory is a set of general laws or principles that have ability to explain particular events or behaviours.
Outline hypothesis testing.
- An essential component of a theory is that it can be scientifically tested.
- A hypothesis can be tested using systematic and objective methods to determine whether it is supported.
What is deduction?
-Deduction is process of deriving new hypotheses from an existing theory.