Topic 2 - Research Methods Flashcards

1
Q

What are the limits of intuition and experience?

A

-Risk mistakes
-Don’t show all possibilities
-Overconfidence (bias blind spot)

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2
Q

What is the scientific method?

A

Theory data cycle: does theory match collected data? Need replication!

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3
Q

What kinds need variables are there?

A

Manipulated (independent) and measured (dependent)

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4
Q

How do you operationalize a variable?

A

Create operational definition (ex. Self-report on a scale)

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5
Q

What are the three types of surveys?

A

Descriptive, correlational, and experimental

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6
Q

What is random sampling?

A

Sample selected from population of interest, non-biased, that can generalize

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7
Q

What are naturalistic observations?

A

Observe everyday worlds without interfering (can use technology)

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8
Q

What is a case study?

A

An in depth study of one person with a rare condition - can provide new insights

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9
Q

What is a correlational study?

A

Understand relationship between two or more variables

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10
Q

What does a scatter plot show?

A

The strength and association between two variables (range from -1 to 1)

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11
Q

How to know if a relationship is causal?

A

Need to know which variable came first and to have no other explanation

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12
Q

What is experimental research?

A

Supports causal statements by manipulating causal variable and seeing the effect on measured variable

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13
Q

What are the three conditions of causality?

A

Covariance (correlation), temporal precedence, and internal validity

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14
Q

What is the difference between random sampling and random assignment?

A

Sampling: equal chance of being selected for study
Assignment: level of independent variable assigned

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15
Q

What questions are asked to confirm construct validity?

A
  1. Variable operationalization?
  2. Participants representative?
  3. Rule out other explanations?
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16
Q

How to assess external validity?

A
  1. Who was included/ left out?
  2. Can results from P.O.I generalize to another?
  3. Replication in non WEIRD populations?
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17
Q

What does WEIRD stand for?

A

Western, educated, industrialized, rich, democratic

18
Q

What is a confound?

A

When experimental groups vary in more than the independent variable

19
Q

What questions do we ask to evaluate claims in the media?

A
  1. What am I being asked to believe?
  2. What evidence is there?
  3. How strong is the result (graphs)?
  4. Causal claim?
  5. Replication?
20
Q

What is the frequency distribution?

A

All possible scores (bar graph)

21
Q

What is central tendency?

A

The centre of score batch (mean, median, mode)

22
Q

What is standard deviation?

A

How much a batch of scores varies around the mean

23
Q

What is effect size, how is it observed?

A

Magnitude of relationship between variables (tight scatterplot = stronger). Quantified with correlation coefficient r (-1 to 1)

24
Q

What is d?

A

Effect size for experiments based on means. Strong effect size when not much variability

25
What is statistical significance testing?
Estimating whether results came from a particular population
26
What is the null hypothesis?
How likely is it that there is no relationship? Low p-value means significant result and data unlikely to occur under null hypothesis
27
What are some reasons for replication failure?
- false positive - small samples - underreporting non significant effects
28
What is HARKing?
Hypothesizing after results are known
29
What is p-hacking?
Removing extreme scores (increases bias) or over analyzing
30
What is open science and preregistration?
Available to other scientists (helps self- correct and progress). Statement of expected outcome before experiment
31
What three ethical standards does the institutional review board check for?
Autonomy (informed consent), beneficence (risks/ benefits), justice (representation)
32
What guidelines does animal welfare act set for ethical experiments with animals?
1. Replacement if possible 2. Refinement (modify to reduce stress) 3. Reduction (few subjects)
33
What is a theory?
Idea designed to organize and explain existing facts and make predictions
34
What is a journal?
A periodical containing peer-reviewed articles on academic discipline for a scholarly audience
35
What are nominal, ordinal, and interval variables?
1. Categorical 2. Categorical with meaningful relative ranks 3. Numbers
36
What is the third variable problem?
For a given relationship, there might be an additional variable that is associated with both
37
Within- subjects vs. Between subjects
1. Same group does multiple conditions 2. Different groups do each condition
38
What is inter-rarer reliability?
Do the research assistants agree on operational definitions?
39
Hawthorne effect?
Telling subjects what researchers are doing/ measuring which changes behaviour
40
Demand characteristics?
Cues from experimenter that tell participants how to behave
41
What is included in informed consent?
Enough info, can opt out anytime with no penalty, can withhold responses, debriefed at the end