| Circumstances |
Observation |
Written Questionaire |
Oral Questionaire |
Interview |
Group Discussion |
Casework Studies |
Visual Projection |
| Large Number of people involved |
* |
* |
P |
- |
P (series) |
- |
P |
| Small Number of people involved |
* |
* |
* |
* |
P |
* |
* |
| Limited time available |
* |
P |
P |
- |
* |
- |
* |
| Limited Resources |
* |
* |
- |
- |
* |
- |
* |
| Dispersed target population |
- |
* |
- |
P (telephone) |
- |
* |
P |
| Respondents' communications skills limited |
* |
- |
* |
* |
some circumstances |
- |
* |
| Need to identify broad range of views |
- |
* |
- |
- |
* |
- |
* |
| Need to get complete and/or very accurate response |
- |
- |
- |
* |
- |
- |
- |
| Want respondents to reflect on circumstances, changes; to discuss feelings or views |
- |
P |
* |
* |
- |
* |
* |
| Consumers suspicious of outsiders |
- |
- |
* (Project Staff) |
- |
* |
* |
* |