## Lab 3a Attentional Capacity

Statement of the Problem

The purpose  of this lab experiment is to examine the relationship between attentional capacity and performance.

Reference

Chapter 3

Materials Needed

•   Tape

•   Open  space

•   Stop watch

•   Tennis ball

•   Tennis racket

•   Cell phone

•    A walking course designed using 12 strips of tape placed across a straight path  but at varying distances apart,  with 30 cm as the minimum  distance and1m  as the maximum distance.  See Figure 1 for an example.

Procedure

The objective of this task is to complete the walking course as quickly as possible without error,  according  to instructions in the conditions below. Running  is not permitted.

You will take turns in the roles of experimenter and participant. Each participant will complete    ve trials in each of the three attention conditions. The experimenter will record the time of completion for each trial on the  Conditions Data Sheet, as well as any observations regarding  performance changes. Complete all trials before switching roles.

Condition 1

In this condition, the participant must walk the course as quickly as possible, altering stride in order to contact  each target line. If he or she misses a target line, repeat the trial.

Condition 2

In Condition 2, the participant will repeat the task outlined  in Condition 1 but must now do so while balancing  a ball on a tennis racquet.  If the participant misses a target line or drops the ball, repeat the trial.

Condition 3

In Condition 3, the participant will repeat the task outlined  in Condition 2, but will do so while texting on a cell phone.  If the participant misses a target line or drops the ball, repeat the trial.

Results

1.  Calculate  the mean time for each condition.

2.  Create a bar graph at  www.onlinecharttool.com/graph?selected_graph=bar to represent  the means for each condition.

Discussion

1.  Based on your data,  how was performance in  uenced by increased attentional demands?

2.  What do these results suggest about  using your cell phone while driving?