psychology ib HL vocab

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67 Terms

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Quantitative Research
- in the form of numbers (experiment)
- aim: numerically expression characterizes behaviour of large groups of individuals
- pros: speed, scientific, generalize
- cons: no context, no flexiblity
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Qualitative Research
- in form of text (interview, observation)
- aim: an in-depth study
- pros: flexible, context
- cons: subjective, small sample
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Meta Analysis
* Variety of data sources → high external validity
* research bias/confirmation bias (can choose their own study to fit the thesis) → low internal validity
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Experimental Studies
- manipulate variables: IV and DV
- control all other variables
- aim: cause and effect relationship
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Correlational Studies
- no manipulation on variables
- aim: locate a pattern
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Descriptive Studies
- no mapulation on variables
- approach variable seperately
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Sample
Partipants in a research
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Sampling
Process finding a sample
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Credibility
The extent the study do what it say (qualitative)

* By sharing the result with the participants, they can confirm the result → increasefa credibility
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Reliability
can the study be replicated

* eg. case study is not replicable → no reliability
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Bias
error which affect how the result reflects reality
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Random Sampling
- random selection
- pros: no bias
- cons: can be not a representive for the target population
(quantitative)
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Stratified Sampling
- groups are made based on shared charateristic
- pros: more focus on the research
- cons: harder analyse?, bias
(quantitative)
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Self-selected sampling
- participant volunteers to be in a study
- pro: reduce time looking for participant
- cons: can be unrepresentive -\> lower population validity
(quantitative)
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Opportunity sampling
- anyone who is convenience
- pro: reduce time looking for participant
- cons: can be unrepresentive -\> lower population validity
(quantitative)
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Purposive Sampling
- particpants are recuited based on certain charateristic
- cons: low external validity
(qualitative)
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snowball sampling
- particpant invites other participants
- occurs when limited participants
(qualitative)
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Observation
- observe people with no, little contact or control
- pros: high accuracy (closed to 1st hand experience)
- cons: time and money
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Covert observation
- the observees are not informed
- pros: avoid demanding charateristic or participant bias
- cons: ethics (consent)
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Overt observation
* observees give consent
* pros: ethics
* cons: social desirability effect, expectancy effect
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Independent Measures Design
* each participant can be only in one group/condition of the experiment
* Strength: no order effect
* Limitation: participant variability
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Matched Pairs Design
put in group based on certain charateristics
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Repeated Measures Design
the conditions of the groups are compared rather than the participants
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Order Effects
How the order of things can affect the result
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Participant Variability
the prior difference between the participants
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Construct Validity
concern about how the experiment is constructed (setting, participation, etc)
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Internal Validity
the extent which the study do what it says (quantitative)
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External Validity
- the extend which the study can be generalized
- include population and ecological validity
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Population Validity
the extend which the study can be generalized to its target population
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ecological validity
the extent which the result can be applied to other setting
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History
Past events which can impacts the DV

* Only for longitudinal study
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Maturation
the amount the participant grow during the experiment
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Experimental Mortality
participant's drop out
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Demand Characteristics
how particpants change their behaviour to fit the what they think is demanded or acceptable
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Experimenter Bias
researcher's bias (quantitative)
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Double-blind designs
Both the people conduct the experiment and participants are decepted
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Quasi-experiments
- used of pre-existing group
- some manipulation
- pros: high external validity
- cons: no cause and effect relationship
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Natural experiments
* real life setting
* pre-existing group
* no control
* pros: high ecological validity
* cons: low internal validity
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Field experiments
* real life setting
* pre-existing group
* some manipulation
* pros: high ecological validity
* cons: low internal validity
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confounding variable
variables which have potential to affect IV and DV
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Representativeness
representation of the target audience
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Target population
population the study is targeted
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Generalizability
The extent the result can be applied outside the sample
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Triangulation
different techniques are used to collect data → confirmation

Type: data and method triangulation
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Establishing a rapport
Researchers ensure that participants are honest
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Reflexivity
research acknowledge or take their bias into account
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Epistemological Reflexivity
acknowledge of the strength and limitation of a method
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Personal Reflexivity
acknowledge of the prior belief or expectation of research has
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Thick Description
The explanation, description which an outsiders can find meaning from
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Acquiescence Bias
Being positive no matter the situation (participant bias)
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social desirability bias
The desire to be acceptance influences the patient's behaviours (participant bias)
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Confirmation Bias
researcher unintentionally tries to prove his/her prior belief (researcher bias)
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Sampling Bias
when the sample does not satisfy the research's purpose
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Biased Reporting
when the finding of study is more lean on one event rather talk about all the finding equally
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Participant Observation
observers is the people in the observed group
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Structured Observation
information is recorded systematically and in a standardized way (ex: table, chart)
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Instructed Observation
no structure, observers simply register whatever behaviours they find noteworthy
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Interview
researchers asked question and participant answers
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Interview Transcript
the transcript of the interview
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Structured Interviews
there is an order which question must be asked
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Semi-structured Interviews
There are required question but no order
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Unstructured Interviews
there are no structured and required question, it is solely based on the participant's performance
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Focus Group
An interview with a group of people at the same time. The questions would be discussed in the group

* Pros: more observation (body language, interaction)


* Cons: time consuming, dominant response, social desirablitiy effect


* sampling bias: exculding people who does not have a specific characteristics
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Inductive Content Analysis
The method to analyze text from the participants to find a pattern. recurring themes.
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Case Study
Use to invest a certain case or event

* Pro: rare, condition which can not be created without ethical concerns
* Cons: difficult to replicate, time consuming, researcher bias, cannot be generalized
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Representational generalization
apply to other populations
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Sample size
affect internal validity because higher participant variability

eg. a psychopath in a sample of 10 people → result 10% of the population is psychopath which is not necessary true :DD