Influence Of Polygamy On Behaviour Patterns Of In-school Adolescent As Expressed By Secondary School Teachers
[A CASE STUDY OF ILORIN METROPOLIS]

The psychometric analysis of the instrument was based on the validity and reliability measures. The properties are presented thus;
Validity
Adewumi (1998) noted that a measuring instrument is described as valid when it measures truly and accurately the quality it is meant to measure. Validity is one of the most crucial psychometric properties of measurement and it is concerned with whether a test or scale really measures what it purports to measure. In order to ascertain the validity of the instrument, the draft of the questionnaire would be submitted to the researcher’s supervisor and other experts in the Department of Counsellor Education for expert vetting and advice.
Reliability
According to Olayiwola (2007), reliability is the degree of consistency with which an instrument measures a construct over time. It has to do with consistency and stability of an instrument or test. Adana (1996) stated that a test could be said to be reliable if consistently and under varying conditions it measures what it ought to measure. The test re-test reliability method would be used to ascertain the reliability of the instrument. 
Procedures for Administration of Instrument and Data Collection
The researcher would personally administer the instrument on the selected respondents with the help of two-trained research assistant. Each respondent was given a questionnaire to complete independently. The administration and collection of the questionnaire would be done during the school hours in order to facilitate quick retrieval. The participants would informed of the purpose the study and their consents would sought before the administration of the instrument. The researcher would score the completed questionnaire using the scoring key provided for each item.
Procedure for Scoring
Section A which consists of four items dealing with demographic data would scored and analysed statistically using frequency count and simple percentage with no point assigned to the items. Section B with 15 items on the influence of polygamy on behaviour patterns of adolescents would be scored using the Four
Point Likert-Type rating scale format of:
Strongly Agree (SA) = 4 points
Agree (A) 3 points
Disagree (D) 2 points
Strongly Disagree (SD) = 1 point
Method of Data Analysis
The data obtained was analysed using simple percentage, mean and standard deviation and ranking order for the descriptive data while t-test and Analysis of Variance (ANOVA) statistical analysis was used to compare means of two independent variables. This is in agreement with Adana (1996), that t-test is a non parametric test which is often used to compare means of two independent variables such as male and female, old and young e.t.c. In view of this, hypotheses 1 and 4 would be tested using t-test while hypotheses 2 and 3 would be tested using Analysis of Variance (ANOVA) in testing and comparing those variable having more than two means. This is in agreement with the assertion of Adana (1996), that ANOVA is an inferential technique for comparing means of three or more groups.