Procedures
The PQ&R Corporation has developed a collection of training materials and skills tests for activities that accurately represent the types of tasks performed by employees in a production environment. Before any instruction is given, each trainee is asked to perform the training battery—a series of tasks for which they are about to receive training. Immediately on completion of instruction, trainees are again asked to perform the training battery to assess the effectiveness of instruction. After performing the battery for the second time, the trainees become employees of PQ&R. On completion of their six-month introductory period of employment, trainees are required to perform the training battery a third time.
Trainee Report
The following graphic is used to represent an individual trainee's scores on the training battery. The scores range from 0 to 100 points corresponding to how well the trainee performed the tasks in the battery. The graphic consists of a unique trainee identifier (composed of his or her session number and a letter), that trainee's pretraining and posttraining scores, and a plus sign (+) indicating that trainee's six-month score. The pretraining score is typically the lowest.
Immediately prior to performing the training battery at the six-month mark, all the trainees in Session 1 were subject to on-the-job observation and their performance was scored. For tasks performed during observation that were also included in the battery, the average (arithmetic mean) score was 99.5. Which one of the following would, if true, best explain the apparent discrepancy between this result and the given information?
Activities performed out of the controlled assessment environment were more prone to error.
The tasks that trainees performed most poorly during on-the-job observation are those that the trainees perform least frequently on the job.
Trainees completing the training battery at the six-month mark were much more likely to perform the tasks well.
Trainees in Session 1 participated in extensive review of their training materials between the posttraining and six-month administrations of the training battery.
On the job, the trainees are usually assigned only a small subset of the tasks included in the training battery.