Identify from the list of characteristics given below these which are related to a good hypothesis in a research: a) Simplicity of explanation b) Plausibility of explanation c) Highly difficult to verify the postulated relations d) Not related to an existing theory e) Relationship formulated among variables having conceptual clarity Choose the most appropriate answer from the options given below:
a, b and e only
A good research hypothesis is clear, parsimonious, plausible and empirically testable, with well-defined variables. Therefore a, b and e are desirable. Difficulty in testing and lack of connection to existing knowledge are not advantages. A hypothesis may challenge a theory or arise from observations; it need not merely confirm an existing theory.
Important Questions from Components of Research - Teaching
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 :
- Consider the following assertion and reason.
Assertion A: A concurrent validity coefficient can exceed a predictive validity coefficient when intervening changes weaken the relationship with the later criterion.
Choose the most appropriate answer.
Reason R: A higher validity coefficient alone does not establish that a test is more suitable for a particular purpose.
