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psych unit 3/4 > key science skills > Flashcards

key science skills Flashcards

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1
Q

beneficence

A

maximising benefits and minimising risks

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2
Q

integrity

A

conducting research in an honest way, and honestly reporting all information

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3
Q

non-maleficence

A

minimising harm as much as possible

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4
Q

justice

A

the research is done in a just way

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5
Q

respect

A

all living things have value

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6
Q

voluntary participation

A

participants freely choose to participate without any coercion or pressure

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7
Q

informed consent procedures

A

participants understand the nature and purpose of the experiment, including potential risks

-two parts: informed and consent
-in the case of children, must obtain informed consent of child (where possible) and their parent/guardian(s)
-withdrawal rights and right to confidentiality must be explained

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8
Q

withdrawal rights

A

participants are able to leave the experiment at any time during or after the experiment

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9
Q

confidentiality

A

the protection and privacy of participant information

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10
Q

use of deception

A

only allowed when knowing the true nature of the experiment will affect participant behaviour

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11
Q

debriefing

A

at the end of the experiment the participant leaves understanding the aim, results, and conclusion, and all questions are answered

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12
Q

ethical concepts

A

-beneficence
-integrity
-non-maleficence
-justice
-respect

BINJR

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13
Q

ethical guidelines

A

-voluntary participation
-informed consent procedures
-withdrawal rights
-confidentiality
-use of deception
-debriefing

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14
Q

sample

A

a group of research participants selected from a larger population of research interest

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15
Q

population

A

the entire group of research interest from which a sample is drawn

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16
Q

representative sample and how to make a sample representative?

A

a sample that closely matches the population
-recruiting a large sample
-using random or stratified sampling

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17
Q

random sampling

A

sampling which ensures that every member of the population of research interest has an equal chance of being selected to be apart of the sample

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18
Q

advantages and disadvantages of random sampling

A

advantages:
-reduces experimenter bias given how participants are selected
-helps to ensure that a representative sample is obtained

disadvantages:
-need to know everyone in the population
-doesn’t guarantee a representative sample (especially for small samples)

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19
Q

stratified sampling

A

involves dividing the population to be sampled into different sub-groups (strata), then selecting a separate sample from each subgroup (stratum) in the same proportions as they occur in the population interest

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20
Q

advantages and disadvantages of stratified sampling

A

advantages:
-more likely to obtain a representative sample compared to random sampling
-useful for comparisons between specific groups

disadvantages:
-need to know proportions within research population
-can be demanding on researcher to select the most appropriate strata

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21
Q

between subjects design

A

an experimental design in which individuals are divided into different groups and complete only one experimental condition

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22
Q

advantages and disadvantages of between subjects design

A

advantages:
-no order effects (unwanted effects of the order of a task/practice effect)

disadvantages:
-participant differences may interfere
-needs more participants than within subjects design

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23
Q

within subjects design

A

an experimental design in which participants complete every experimental condition

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24
Q

advantages and disadvantages of within subjects design

A

advantages
-fewer participants needed compared to between subjects design
-eliminates participant differences between groups

disadvantages:
-vulnerable to order effects (practice effect)
-participants are more likely to drop out

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25
Q

mixed design

A

-an experimental design which combines elements of within subjects and between subjects designs
-typically has a pre and post test (within subjects) and a main task (between subjects)

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26
Q

advantages and disadvantages of mixed design

A

advantages:
-enables experimenters to compare results both across experiment conditions and across participants over time
-allows multiple experimental conditions to be compared to a baseline control group

disadvantages:
-can be more time-consuming and less cost efficient
-harder to conduct

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27
Q

standard deviation

A

-the average deviation (or distance) of a set of scores from the mean
-the higher it is, the more widely spread the data is

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28
Q

case study

A

an intensive, in-depth investigation of some behaviour activity, event, or problem of interest in a single person, group, organisation, or situation

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29
Q

how are case studies different from experiments?

A

-they don’t measure cause and effect relationship between variables
-they involve investigating a single individual or group

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30
Q

advantages of case studies

A

-reduces artificiality compared to experiment
-enables things to be investigated that may be otherwise infeasible through an experiment
-can provide rich qualitative data

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31
Q

disadvantages of case studies

A

-no causation
-small sample size
-difficult to generalise
-time-consuming
-susceptible to bias
-may not be repeatable

32
Q

correlation study

A

involves investigating whether a relationship exists between variables

33
Q

direction of relationships in correlation studies

A

-positive: as one variable increases, so does the other (and vice versa)
-negative: as one variable decreases, the other increases (and vice versa)
-no correlation

34
Q

advantages of correlation studies

A

-extra procedures to control for extraneous variables aren’t needed
-observation of real-life behaviours with no manipulation of variables may result in more natural behaviours

35
Q

disadvantages of correlation studies

A

-correlation doesn’t equal or imply causation
-the relationship is bi-directional, and you can’t determine which variable has more influence
-large amounts of data required
-low internal validity - can’t determine whether there was influence of third variable

36
Q

classification and identification

A

-classification: the arrangement of phenomena, objects, or events into manageable sets

-identification: a process of recognition of phenomena as belonging to particular sets or possibly being part of a new or unique set

37
Q

advantages of classification and identification

A

-people identified as having a similar classification can feel a sense of belonging or support
-using classifications can allow for efficient processing of large amounts of info

38
Q

disadvantages of classification and identification

A

-labelling through identification can lead to stereotyping, prejudice, or discrimination
-classifications may be based on subjective criteria
-large amounts of info are required to create classifications

39
Q

fieldwork

A

based on inquiry or the investigation of an issue, fieldwork involves observing and interacting with a selected environment beyond the classroom, usually to determine correlation, rather than a casual relationship

40
Q

advantages of fieldwork

A

-info on sensitive topics can be obtained using fieldwork
-participant anonymity in questionnaires can reduced biased or dishonest answers
-natural settings are more likely to show behaviours that reflect real life
-can be used when it would be impossible or unethical to use controlled experimental methods

41
Q

disadvantages of fieldwork

A

-observed behaviour is subjective, open to interpretation and bias by researcher
-prone to desirability bias - participants respond in a way they think they should respond, particularly if the researcher is present
-interviews, focus groups, and yarning circles can be time consuming
-minimal control over extraneous variables, results may not be replicable
-ethical concerns with lack of informed consent in some cases

42
Q

literature review

A

review of published research

43
Q

advantages of literature review

A

-can determine what is already known and whether there is a solid foundation of knowledge, based on multiple sources
-they identify gaps in current understanding and areas for future research

44
Q

disadvantages of literature review

A

-a selection bias in chosen studies may result in the review being unrepresentative of current understanding or provide unbalanced conclusions
-only secondary data acquired

45
Q

modelling

A

involves the construction and/or manipulation of either a physical model, or a conceptual model that represents a system involving concepts that help people know, simulate, or understand the system

46
Q

advantages of modelling

A

-allows unobservable events to be visualised
-can test a product before it is created

47
Q

disadvantages of modelling

A

-large amount of valid source data may be need to creation of model
-complex models can be expensive

48
Q

product, process, or system development

A

design or evaluation of an artefact, process, or system to meet a human need, which may involve technological applications in addition to scientific knowledge and procedures

49
Q

simulation

A

a process of using a model to study the behaviour of real or theoretical systems

50
Q

advantages of simulation

A

-can allow use to predict future events and what if situations
-can test a product before it is created

51
Q

disadvantages of simulation

A

-not the real thing - people may respond differently in real life, therefore simulations involve assumptions about behaviour that lowers external validity because of artificiality
-complex simulations can be expensive

52
Q

systematic errors

A

-affects accuracy
-causes readings to differ from the true value by a consistent amount each time
-all readings are shifted in one direction from the true value

53
Q

random errors

A

-affects precision
-present in all measurements except for those which involve counting
-unpredictable variations in the measurement process and results in a spread of readings

54
Q

personal errors

A

includes mistakes, miscalculations, and observer errors when conducting research

55
Q

uncertainty

A

-something that isn’t accurately or precisely known
-the uncertainty of the result of a measurement reflects the lack of exact knowledge of the value of the quantity being measured

56
Q

accuracy

A

how close a measurement is to the true value of the quantity being measured

57
Q

precision

A

how closely a set of measurement values agree with each other

58
Q

extraneous variable

A

a variable other than the IV that can cause a change in the DV, therefore affecting the experiment in an unwanted way

59
Q

confounding variable

A

a variable other than the IV which has had an unwanted effect on the DV

60
Q

examples of extraneous variables

A

-participant variables
-situational variables
-demand characteristics
-experimenter effects
-placebo effects

61
Q

participant variables

A

the personal characteristics that individual participants bring to an experiment which can influence their response - can be biological, psychological and/or social

eg age, sex, sleep patterns

62
Q

control of participant variables

A

-ensuring participants in different experimental conditions are as similar as possible
-using a large sample
-using random allocation
-using the appropriate research design - within-subjects is generally most effective

63
Q

situational variables

A

external variables (other than the IV) associated with the experimental setting that may influence participant responses, and therefore the responses

eg order effects

64
Q

order effects and examples

A

-when the results of the DV is influenced by the specific order in which the experimental tasks are presented rather than the IV

practice effect: the influence on performance (the DV) that arises from repeating and/or prior experience with a task, including the test materials, procedures and settings
carryover effect: the influences that a particular task has on performance in a task that follows it. They arise simply from experiencing a task.

65
Q

control of situational variables

A

-keep situational variables constant
-counterbalancing: systematically changing the order of tasks for participants to reduce/avoid the unwanted effects on performance of any one order

66
Q

demand variables

A

cues in an experiment that may influence a participant’s response, which affects the results, eg guessing the hypothesis and changing their responses to support the hypothesis

67
Q

control of demand variables

A

-use deception
-single-blind procedure: the participants are unaware of whether they are in the experimental or control group, and therefore unaware whether they have been exposed to the IV. This avoids issues with participant expectations, as all participants equally feel like they are receiving a treatment.
-double-blind procedure: both the participants and the experimenter are
unaware of which is the experimental and which is the control group. This avoid issues with participant expectations and the experimenter effect.

68
Q

experimenter effect

A

this can occur if the experimenter is biased because they know which group is receiving is receiving the treatment and which isn’t

69
Q

control of experimenter effects

A

-blind procedures
-standardised Instructions and procedure

70
Q

placebo effect

A

an improvement in health or wellbeing due to the belief that the treatment given will be effective

71
Q

how are placebos used?

A

given to control group, so any behaviours should occur in both groups

72
Q

validity

A

the extent to which a measure accurately measures what it is supposed to be measuring
-related to accuracy

73
Q

internal validity

A

the extent to which an investigation actually investigated what it set out to investigate

74
Q

external validity

A

the extent to which the results obtained for a study can be applied beyond the sample that generated them

75
Q

reliability

A

the extent to which a measure produces results that are consistent, dependable, and stable
-reproducibility and repeatability

76
Q

repeatability

A

the degree to which a specific research investigation obtains similar results when it is conducted again under the same conditions on all occasions

77
Q

reproducibility

A

how close the results are to each other when an investigation is replicated under changed conditions

psych unit 3/4 (7 decks)

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