You are wondering whether having a smartphone while
studying would interfere with learning. You created an
experiment with two independent variables: smartphone
condition and material. There were two smartphone
conditions: present or absent. There were two material
conditions: easy or difficult. Participants were asked to read
the material (an easy fairy tale or a difficult science article)
while having or not having their smartphone in front of them.
At the end of the experiment, they took a multiple-choice test
over the material. The table below shows the mean test
scores. Based on the results, you should expect which of the
following results? - ANS ✔Non-significant main effect of
smartphone, significant main effect of material, and non-
significant interaction
PSY 285 Exam 3
, 2
PSY 285 Exam
You are conducting an experiment based on a 3 x 3 x 2
between-subjects design. In this experiment, how many
separate groups of participants do you have to test to
complete the experiment? - ANS ✔18
Dr. Otani conducted an experiment in which he manipulated
two independent variables. The first independent variable
was arousal: participants were presented with either
arousing pictures (such as a picture showing a violent act) or
neutral pictures (such a picture of a file cabinet) and were
asked to remember as many of these pictures as possible.
The second independent variable was divided attention:
while viewing the pictures, participants heard a series of
digits, and in one condition, they were asked to press a
button whenever three odd digits were presented
consecutively, and in another condition, they were simply
asked to listen to the digits. At the end of the experiment,
participants were asked to recall as many pictures as
possible writing down a short description of each recalled
picture. In this experiment, how many factors are involved? -
ANS ✔2
Individual differences make psychology interesting;
however, individual differences can be a threat to internal
PSY 285 Exam 3
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