Using the scheme shown in Table 14.1, diagram the evaluation design used in each of the following demonstration programs.

1. To evaluate a government training program that provides low-income, low-skilled, disadvantaged persons job-specific training, members of the target population are randomly assigned to either a treatment group that is eligible to receive services under the program or to a comparison group that is not. Data are collected on the earnings, welfare receipts, and so forth of both groups during the training period and for two years thereafter.
2. To evaluate a government training program that provides low-income, low-skilled, disadvantaged persons job-specific training, members of the target population who live in the counties in the eastern half of a large industrial state are assigned to a treatment group that is eligible to receive services under the program, while members of the target population who live in the counties in the western half of the state are assigned to a comparison group that is not. Information is collected on the earnings, welfare receipts, and so forth of both groups for one year prior to the beginning of training, during the training period, and for two years thereafter.
3. To evaluate a government training program that provides low-income, low-skilled, disadvantaged persons job-specific training, information is collected on the earnings, welfare receipts, and so forth of those persons who receive training. This information is collected for the year prior to the beginning of training, during the training period, and for two years thereafter.