Answer: B) Cross sectional study
Explanation:
Cross-sectional study is defined as the researching method through which population or other subject subset is observed and analyzed at certain period of time to evaluate their behavior.The data is gathered about different different population for assessment.
Other options are incorrect because longitudinal design, cross-lagged panel method or ex-post-facto researching technique is not used for measuring and analyzing the subject at a particular time stamp.Thus, the correct option is option(B).
Answer:
Fixed ratio
Explanation:
The Fixed ratio schedule is used in ope-rant conditioning. Ope-rant conditioning is work on the relationship of response and stimulus due to that the behavior of a subject has been changed.
As the name indicated the reinforcement is being given after a fixed ratio for example after every ten times the reinforcement is provided to the rat in the box. So the rat can learn the behavior.
In this type of reinforcement, the schedule will remain constant. If the reinforcement is not provided after a fifth, tenth or any fixed number then it won't be a fixed ratio.
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