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Psychology
Research Methods
Aims and Hypotheses
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Created by
Preet Dukhi
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Cards (22)
What are the main topics covered in the video?
Research aims
and
hypotheses
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What is the difference between research aims and hypotheses?
Aims outline what to
investigate
; hypotheses state
testable
predictions
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Why might a researcher choose to investigate a specific aim?
Previous
research raised interesting questions
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How should a researcher phrase an aim?
As a clear
statement
or
question
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What is a hypothesis?
A precise statement that can be
tested
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How does a hypothesis differ from a prediction?
A
hypothesis
is a
testable
statement, not a
prediction
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What is the null hypothesis?
It states there is no
difference
between conditions
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What is the alternate hypothesis?
It suggests there is a
difference
between conditions
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What is the principle behind accepting the null hypothesis?
It is accepted unless
strong evidence
rejects it
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What is the role of statistical tests in hypothesis testing?
They provide evidence to accept or reject
hypotheses
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What is a directional hypothesis?
It states the
expected
direction of results
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When would a researcher use a directional hypothesis?
If
previous research
indicates the expected direction
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What is a non-directional hypothesis?
It states there is a
difference
but not the
direction
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Why should the word "prove" be avoided in scientific writing?
Science is
open
to new evidence and
falsifiability
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What probability threshold is commonly accepted for the alternate hypothesis in psychology?
One in 20
or less
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What does accepting the alternate hypothesis imply?
The
evidence
is strong enough, but not perfect
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What are the two types of hypotheses in research?
Null hypothesis
(H0): No
difference
between conditions
Alternate hypothesis
(H1): Suggests a difference exists
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What are the differences between directional and non-directional hypotheses?
Directional hypothesis: States
expected
direction
of results
Non-directional hypothesis: States a difference exists, but not the direction
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What is the importance of operationalizing variables in a hypothesis?
Clearly defines how variables are measured
Ensures clarity and precision in
research
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What is the significance of the term "falsifiability" in science?
A
theory
must be open to being proven false
Ensures scientific claims can be
tested
and challenged
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What resources are available for patrons of psycboost?
Bonus resources
Tutorial videos
Access to a
Discord
channel
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What is the role of evidence in hypothesis testing?
Evidence collected determines acceptance or rejection of
hypotheses
Strong evidence
leads to accepting the
alternate hypothesis
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