Hypotheses: an attractive female would be seen as more attractive by males who encounter
her while they experience strong emotion (fear) than by males not experiencing a strong
Participants: males between ages 18-35 who cross either of two bridges in Vancouver. The
“control” bridge was low, solid & unlikely to arouse fear or anxiety. The “experimental” bridge
was high & swayed, likely to arouse fear or anxiety.
Materials: participants completed the TAT (they’re asked to respond to stimuli which may
reveal their needs, feelings & personality traits).
Design: two independent variables; participants were approached after crossing either of the
bridges (first independent variable) by either a male or female (second independent variable)
Procedure: after crossing the bridge, the males were met by a male or female. They were
asked to fill out a questionnaire, included was a measure of sexual imagery taken from the
TAT. Participants were offered the male or females number in case they wanted to contact
them later about the study. If participants called more after crossing the high bridge, they
were more attracted to the female, mislabelling their fear as sexual attraction. The
dependent variable was the degree of sexual imagery participants’ responses to the TAT &
the number who crossed each bridge who called the male or female.
Results: prediction was correct; those who crossed the high bridge & were met by a female
showed more sexual arousal in their TAT scores than those who crossed the low bridge. A
higher number of males took the females number & called if they had crossed the high bridge
over the low one. If they were met by a male, they were less likely to call.
Independent & Dependent Variables
Experiment: a research method in which the investigator manipulates a variable under
carefully controlled conditions & observes whether any changes occur in a second variable as
We want to find out how variable “x” affects “y”
Independent variable: a condition that an experimenter varies in order to see its impact on
another variable. It is “free” to be varied by the experimenter
Dependent variable: the variable that’s thought to be affected by manipulation of the
independent variable. It’s usually a measurement of the participants’ behaviour. It “depends”
Experimental & Control Groups
Experimental group: consists of subjects who receive some special treatment in regard to the