In order to ensure that the measured content represents the construct that is being measured, four aspects are considered: conceptuality, representativeness, relevance and appropriateness of the development process.
After considering this analysis and evaluating the distribution of the remaining common items along the difficulty range of the test and the items' representativeness of the test content, six items were selected to equate the TRC-n-2 and TRC-n-3 test forms: RB1LC, RB2LC, RB3.6IC, RB3.10IC, AN3.9CC and TT6IC.
Item Content Validity Index for relevance and representativeness are shown in Table 2. Item CVI greater than 0.78 is considered excellent regardless of the number of experts [ 29].
Content Validity Index for relevance and representativeness was calculated for each item (the proportion of experts who rate the item as content valid defined as a rating of 3 or 4) and for the entire instrument (computed by averaging the item Content Validity Index across items).
Content validity is composed of relevance and representativeness [ 15].
There may be many reasons for heterogeneous microsatellite contents, potentially leading to a loss of representativeness in the libraries isolated by methods such as that described here, combining several sensitive steps (enzyme digestion, multiplexing of the motif for enrichment, PCR, pyrosequencing).
This practice permits the all-important content concepts in the domain and supports the representativeness of the instrument.
One solution to this lack of representativeness would be to test the content validity, validity, and reliability of this instrument in diverse cultural groups.
Briefly, quality of measurement included internal (internal consistency, relevance of items and representativeness of items of the scale-content validity) as well as external components of validity (the relationship with other tests in a manner that is consistent with theoretically derived hypotheses-construct validity).
