| Changing experimenter |
Q-2011 |
Experimentador |
Monitor |
An experimenter plays the role of client in the interviews by answering questions from the experimental subjects (analysts) |
The experimenter (client) was replaced |
Replacing the experimenter who was not available |
| Professional subjects |
Q-2012 |
Población |
Experience |
The subjects were Master's students |
The subjects were professionals |
Use participants in the International Working Conference on Requirements Engineering as subjects |
| Development experience |
Q-2012 |
Operacionalización |
Tratamiento |
Subjects had little or no development experience |
The subjects were professionals with experience in development |
Analyse the influence of experience on developmentAdapting to the |
| Consolidation time |
Q-2012 |
Protocolo |
Guías de experimentación |
The subjects (analysts) had 120 minutes to report the requirements (consolidation time) |
The consolidation time was 30 minutes |
Adapt to the time available |
| Elimination of the training period |
Q-2012 |
Protocolo |
Guías de experimentación |
The experiment was carried out at the end of the course, i.e. after the training period |
There was no training period |
Adapting to the International Working Conference on Requirements Engineering |
| Problem domain |
E-2012A |
Operacionalización |
Tratamiento |
Knowledge of the problem domain was defined, by subjective assessment, as 'familiarity' |
Knowledge was defined as an independent variable with two levels: known and unknown problem domain |
Analyze whether knowledge of the problem domain affected the results |
| Repeated measures design |
E-2012A |
Protocolo |
Diseño experimental |
The interviews were conducted on two different days |
The design was changed to a design of repeated measurements (within-subjects) |
Adapt the experiment as there were fewer experimental subjects |
| Design of repeated measures |
E-2012A |
Protocolo |
Guías de experimentación |
Interviews between subjects (analysts) and experimenter (clients) were in group |
interviews were individual |
Conduct interviews with 2 experimenters (clients) and in two languages. |
| Blocking by language |
E-2012A |
Protocolo |
Diseño experimental |
There were no blocking variables |
There were a blocking variable per language |
Prevent language from influencing results |
| Blocking by experimenter |
E-2012A |
Protocolo |
Diseño experimental |
There were no blocking variables |
There were a blocking variable per experimenter |
Prevent experimenter from influencing results |
