When you read a research article published in a journal which is not peer reviewed, what aspect of the report should you be most concerned about ?
rigour reflected in reporting the research
The main concern is the rigour of the methods, analysis and reporting. Check whether the design addresses the question, the data and methods are transparent, and the conclusions follow from the evidence. Peer review provides scrutiny but does not guarantee correctness; absence of journal peer review does not itself prove that a study is poor.
An investigator wants to conduct a study on orthopaedically handicapped children. The type of sampling to be used would be
Match each characteristic in List I with the validity evidence in List II.
List I: (a) Test scores predict later performance on an external criterion; (b) Scores support interpretation in terms of a theoretical psychological construct; (c) Test content represents the intended knowledge domain; (d) Scores relate to an appropriate external criterion measured at about the same time.
List II: (i) Content validity; (ii) Predictive validity; (iii) Concurrent validity; (iv) Construct validity.
The element that differentiates between stratified and quota sampling techniques is
If a sample survey of the same 100 households is conducted in a particular village, annually for five years, the data so collected will be described as :
Assertion A: A concurrent validity coefficient can exceed a predictive validity coefficient when intervening changes weaken the relationship with the later criterion.
Reason R: A higher validity coefficient alone does not establish that a test is more suitable for a particular purpose.