Research Aptitude-Experimental Design (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 5 - 7 of 11

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Passage

Psychology, as a scientific study of behavior, employs several diverse research methods to collect and analyse data. In the early phase of modern psychology, experimental method has been highly popular. The early psychologists, like Fechner and Ebbinghaus, were well - known experimentalists. Experimental method allows the active manipulation of the independent variable (IV) Ronald Fisher and other systematized the area of experimental designs. Due to the success of controlled laboratory experiments, field setting were also carried out where the IV is manipulated in natural or field settings. Especially due to the need for policy and program evaluation research, Quasi - experimental designs have also been developed. Various non- experimental methods including survey and questionnaire research, are also employed in psychology. The survey method employs interviews, both structured and unstructured, and questionnaires. Both open - end and close - end questions and scale items can be used in interview schedules and questionnaires. Different types of observations, including naturalistic observation, participant and non - participant observation, are also used in certain areas like ethology. In the qualitative research tradition, case studies are widely used. Special research approaches, for example, ethnographic research have been developed for cross-cultural psychology. In addition, psychologists use various measurement techniques including standardized objective tests, projective methods, situational tests and even physiological measures. The use of such diverse methods and measurement techniques has enriched the science of psychology as well as our understanding of human and animal behavior including the cognitive processes.

Question number: 5 (2 of 2 Based on Passage) Show Passage

» Research Aptitude » Experimental Design

Appeared in Year: 2015

Assertion-Reason▾

Assertion (Ꭺ)

Experimental method, as compared to other methods, is more suitable for studying cause and effect relationship

Reason (Ꭱ)

As compared to other methods, experimental method permits more efficient control of extraneous variance.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

Question number: 6

» Research Aptitude » Experimental Design

Appeared in Year: 2015

Assertion-Reason▾

Assertion (Ꭺ)

Non-equivalent control groups are often encountered in quasi-experimental research. (December)

Reason (Ꭱ)

Quasi-experimental designs are highly useful in policy and program evaluation research.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Passage

Experimental personality research was extremely popular after 1950 for about three to four decades. In experimental personality research, one of the major focuses is to study how the effect of experimentally manipulated independent variable is moderated by personality variable/s. In one of such study, the researcher wanted to study whether the effect of interpolated learning (A) is moderated by Anxiety (B). The researcher hypothesized that the interpolated learning would adversely affect the recall of original learning, more in high anxious subjects than low anxious subjects. Using a standardized Anxiety scale, from an initial pool of two hundred subjects, fifty high and fifty low anxious subjects were obtained.

Both, high as well as low anxious groups were further divided into two groups-Experimental group and Control group. The experimental groups first learned List A of CVC trigrams then learned another List B of CVC trigrams with similar association values, and then tested for Recall (A). The subjects in control groups learned List A. then they received the cancellation task for the specific period (equal to the average time, taken by the corresponding experimental group to learn List B). The subjects were then tested for the Recall of (A). GroupWise means and standard deviations for recall scores were obtained.

The standard deviations were found comparable across the groups. Treating recall

Scores as the dependent variable, the appropriate ANOVA was carried out. The main effect of A was found significant at 0.05 levels. Similarly, the F-ratio, defined as Equation was found statistically significant at 0.01 level.

Question number: 7 (1 of 4 Based on Passage) Show Passage

» Research Aptitude » Experimental Design

Appeared in Year: 2015

MCQ▾

Question

Which of the following conclusion/s can be drawn about the researcher’s hypothesis?

(1) Researcher’s hypothesis has been verified.

(2) Researcher’s hypothesis has not been verified.

(3) Full data have not been presented which is necessary to evaluate the researcher’s hypothesis.

(4) Anxiety moderated the effect of interpolated learning.

Choices

Choice (4) Response

a.

c and d only

b.

a only

c.

a and d only

d.

b and d only

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