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Mrs. Bryan Research in Behavioral Sciences

Research in Behavioral Sciences

Rebecca Bryan

on 7 November 2013

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Transcript of Mrs. Bryan Research in Behavioral Sciences

Research in Behavioral Science
Theory vs. Hypothesis
an explanation
based on a large
body of evidence
over time
a prediction that
can be tested
Examples of Theories:
Theory of Gravity
Social-Learning Theory
Gender-Schema Theory
Example of an Hypothesis:
Students that are involved in
extra-curricular activities will
rate school as a more positive
experience than students who
are not.
Population -
a group of individuals
that have something
in common
Sample - a small portion
of a population selected
for observation
Samples should be.......
Randomly selected -
every member of the
population has an equal
chance of being included

Large enough -
you should be able
to generalize the
information from the
sample to the population

Representative of
the population -
should be a smaller
version of the

Survey -
Questioning a sample
about their attitudes,
beliefs & behaviors
A good survey should be.....
focused on one
important topic
Easy to understand
Objective - do not
lead the subject
Easy to analyze
Completed with informed consent
Results should be
shared with the
Sample questions:
How friendly are our employees?
Better -
On a scale of 1-5, with one being terrible,
and five being excellent, how would you
rate the quality of our customer service?

1 2 3 4 5
Bad -
Do you think the hospital took good care
of you?
Better -
On a scale of 1 to 5, with 1 being excellent and 5 being very bad, what level of care did you receive from
the hospital?

1 2 3 4 5
On a scale of 1-10, how much do you
like school?
How satisfied are you with your
overall school experience? 5 means very satisfied, 1 means very dissatisfied.

1 2 3 4 5
Would you agree that the current
president is doing a bad job?
How would you rate the current
president in overall job performance, with one being excellent 5 being bad?

1 2 3 4 5
What is your current position on the
general status of our country's
counter-insurgency efforts in
How well do you think that the US
military is responding to terrorist
attacks in Afghanistan?
A) Excellent
B) Good
C) Fair
D) Poor
E) I don't know
Do you watch the evening news?
How many nights per week do you
watch the evening news?
A) 0
B) 1
C) 2
D) 3
E) 4
F) 5
G) 6
H) 7
Unbiased - the sample should
not be known to have strong
opinions about the topic

Parts of a Hypothesis:
Variable - a trait with two
or more categories
Independent Variable -
the variable that you think
causes a change in another
Dependent Variable -
the variable you measure to
see if it has been changed by another variable
Example: Students that are involved in
extra-curricular activities will
rate school as a more positive
experience than students who
are not.
Independent variable:
Whether or not a student is
involved in extra-curricular

Dependent variable:
How highly the student rates
their school experience
Example: Children who are
younger than their classmates
are more likely to be diagnosed
with ADHD.
Independent Variable:
age of the student

Dependent Variable:
whether or not they
are diagnosed with
Example: Older students are more
likely to remember to charge the batteries
on their computers than younger students.
Independent Variable:
age of student

Dependent Variable:
whether or not they remember
to charge the battery on their
Bad -
Do you like school?
Better -
Rate how you feel about school,
with one being love and 5 being hate.

1 2 3 4 5
Bad -
Do you play sports?
Better -
In the last year, how many sports
teams have you played on?

0 1 2 3 4 5 6
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