key sience skills Flashcards

1
Q

what is the population

A

entire group of people that is of interest to a researcher

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2
Q

what is the sample

A

group of participants selected to participate in study from a population of interest

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3
Q

what are the sampling techniques

A

random, convenience, stratified

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4
Q

what is random sampling

A

uses chance so every member of the population has equal chance of being selected

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5
Q

what is stratified sampling

A

a sample contains same proportions of from each strata that exists in the population

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6
Q

what is convenience sampling

A
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7
Q

what are the elements of a hypothesis

A

IV, Population, Obvious direction, DV (IPOD)

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8
Q

what is an aim

A

broad statement about what you intend to investigate

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9
Q

what are the tyes of variables

A

Independent (IV), Dependent (DV), Controlled Variable, Extraneous (EV), Confounding (CV)

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10
Q

what is a controlled variable

A

researcher holds constant to prevent it from affecting the dv

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11
Q

what is the dependent variable

A

the one we measure

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12
Q

what is the independant variable

A

the one we change

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13
Q

what is a confounding variable

A

has affected the dv

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14
Q

what is a extraneous variable

A

might affect the dv

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15
Q

what is a case study

A

detailed investigation into one instance overtime

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16
Q

what is a controlled expirment

A

experimental manipulation f a variable to determine it effect

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17
Q

what is a correlation study

A

non experimental investigation of relationship between variables

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18
Q

what is fieldwork

A

observing and interacting with beyond the classroom

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19
Q

what is a literature review

A

report produced by reading scientific research

20
Q

what is a within subjects design

A

each participant is exposed to both the experimental and control group

21
Q

what is a between subjects design

A

participants are allocated to differnet groups

22
Q

what is a mixed design

A

combines between and within

23
Q

what is a random error

A

unpredictable result that occur during measurement - affects precision

24
Q

what is a systematic error

A

consistent variations in measurement process - affects accuracy

25
what is a personal error
mistakes, miscalculation, observer errors = exclude from report
26
what is an uncertainty
lack of knowledge of the true value of measurements
27
what is an outlier
a data point that differs from the rest of collected data
28
what is accuracy
closeness to true value
29
what is precision
do sets of values agree with eachother
30
what is the internal validity
it investigates what is sets out to - appropriate design, sampling techniques and is impacted by variables
31
what is the external validity
results can be applies to **similar individuals** in a **different setting** - broad inclusion criteria and sampling of population to resemble general population
32
what is the mean median and mode
mean = average (affected by outliers) median=middle mode=most common
33
what is reproducibility
different conditions similar results
34
what are the ethical concepts
beneficence, integrity, respect, non maleficence, justice
35
what are the ethicl guidelines
confidentiality, informed consent, voluntary participation, deception, withdrawal, debriefing
36
what is justice
fair distribution of benefits, risks, costs and recourses
37
what is non maleficence
avoids harm and ensure good outweighs the bad
38
what is beneficence
commitment to do good and minimize risk
39
what is integrity
acting with honesty and transparency
40
what is respect
regarding individual differences and ensuring the right to autonomy and choice
41
what is repeatability
same conditions of measurement and same techniques
42
what are the strengths of within subjects
- Only requires small samples - Statistically powerful - Removes the effects of individual differences on the outcomes
43
what are the weaknesses of within subjects
- Internal validity threats reduce the likelihood of establishing a direct relationship between variables - Time-related effects, such as growth, can influence the outcomes - Carryover effects mean that the specific order of different treatments affect the outcomes
44
what are the strengths of between subjects
- Prevents carryover effects of learning and fatigue. - Shorter study duration.
45
what are the weaknesses of between subjects
- Needs larger samples for high power. - Uses more resources to recruit participants, administer sessions, cover costs, etc. - Individual differences may be an alternative explanation for results.
46
what are the strengths of a mixed design
more complete understanding, corroborate results, compare multiple levels, engaging for researchers.
47
what are the weaknesses of a mixed design
complexity in combining data, limited resources, ethical considerations, time-consuming data collection and analysis.