The roles of the interviewer is critical in obtaining accurate and reliable survey data. Consequently, interviewers working on each of the PSI studies are carefully trained in all the nuances of the questionnaire administration and monitored throughout the interviewing period to assure uniform practices:

I. All interviewers working are required to complete an interviewer training course, which will
provide both general and specific interviewing instructions, refresher reviews and “On-Field”
monitoring.
II. At the conclusion of their training, interviewers conduct mock interviews, and their
performance is evaluated by Field’s professional interviewing supervisors.
III. Before the start of data collection for all projects, all interviewers working on the study are
required to attend a briefing session where the interviewing procedures are described in detail
by the Study Manager/Director. This session provides both interviewers and supervisors with
an overview of the study and includes a question by question review of all items in the survey.
The session also discusses recommended best practice approaches for dealing with different
interviewing situations, documenting the results of contact attempts, scheduling of callbacks
and confidentiality requirements.
IV. Debriefings and retraining sessions are held as necessary to be sure that all interviewers are
following consistent procedures. The performance of each member of the interviewing team is
closely monitored and evaluated especially during the first few days of interviewing.

PSI is an active member of the Nigerian Marketing Research Association (NiMRA).
We subscribe fully to international codes of conduct by the:

Market Research Society (MRS)
European Society of Market Research (ESOMAR).
Pan- African Media Research Organisation (PAMRO)
Gallup International
Transparency International

In order to ensure accurate and reliable results of fieldwork, PSI emphasises quality control as an integral part of any project undertaken.Specifically, the following procedures apply to all our projects:

I. Central briefing of all key field personnel at our head office in Lagos
II. Pre-briefing and selection of only experienced interviewers in each study locations
III. Piloting of questionnaire and modifying for clarity and comprehension.
IV. Field supervisors work first as interviewers during training before assuming supervisory roles. This is done in order to familiarise them with the methodology and intricacies of the study. The supervisors carry out the following tasks in the course of any project:
Reviewing of all completed questionnaires for legibility, accuracy and consistency
Monitoring the accuracy of individual interviews
Spot field checks on interviewers to eliminate fraud and in accurate form filing
Accompanying and back checking of each interviewers work; as a rule a minimum of 20% accompaniment and back checks is carried out by supervisors and quality control officers (ACCP = 5%, BC = 15%)
V. Group sampling method is adopted. This technique requires that a field team (comprising one supervisor and between 4 to 6 interviewers) complete a sector or an area before moving to another sector/area as a group. The greatest advantage of this method is the relative increase it affords in the precision and reliability of results as it eliminates the possibility of fraud by individual interviewers.

A continuing commitment to excellence in the services we provide in terms of Market Research, Opinion Poll, Social Research, Quality Control and Project Monitoring. An integrated, well trained and highly motivated permanent and contract/ temporary staff with a team approach Modern facilities, incorporating the latest techniques and technologies in field research and operations. A growing operation to serve both expanding clients needs and increasingly complex data collection methods. An international clientele from industry, market research, and government who rely on PSI year after year. Project coordinators who work in partnership with the client to execute studies in line with requirements.