UGC NET Questions (Paper – 1)

External validity refers to the degree to which research results obtained from a particular sample and context can be applied to broader populations, different environments and future periods. High external validity suggests that findings are not limited to the specific conditions under which the study was conducted. It depends on factors such as sampling methods, realism of the setting and replication in different contexts. Because the stem highlights generalisation to other settings, populations and times, external validity is the correct term.

Option A:
External validity is enhanced when the sample is representative and when the research conditions resemble real-world situations, increasing the likelihood that similar results will be observed elsewhere. Studies with narrow samples or artificial settings may show strong internal validity but weaker external validity. The generalisability focus in the stem aligns directly with the concept of external validity, confirming it as the right option.

Option B:
Internal consistency is a type of reliability that concerns how well items on a test measure the same underlying construct, often assessed with coefficients like Cronbach’s alpha. It does not address whether findings generalise beyond the sample, so internal consistency is not the correct answer.

Option C:
Item difficulty refers to how hard individual test items are for examinees, usually expressed as the proportion of test takers who answer each item correctly. While important in test construction, it is unrelated to the generalisability of study findings across settings or populations. Thus, item difficulty does not fit the description in the stem.

Option D:
Standard error is a statistical index that indicates the variability of a sample statistic, such as the mean, across repeated samples from the same population. Although it relates to sampling accuracy, it is not itself the term for generalisability across broader contexts. Therefore, standard error is not the appropriate completion here.

Statement D is wrong because convenience sampling does not guarantee high external validity; it often leads to biased samples that limit generalisation. Statements A, B, C and E are correct: external validity concerns generalisation, narrow or atypical samples restrict it, replication strengthens it and realistic settings can enhance ecological validity. Hence, the only wrong statement is D.

Option A:
Option A is incorrect because it also labels A, which properly defines external validity, as wrong along with D. Treating A as incorrect misrepresents a basic concept in research design.

Option B:
Option B is wrong because it groups B with D as wrong, even though B accurately describes how an atypical sample can limit generalisability. Misclassifying B obscures a key threat to external validity.

Option C:
Option C is also incorrect because it treats C, which rightly notes the value of replication, as wrong. Replication is a standard strategy to test the robustness of findings across contexts.

Option D:
Option D is correct as it singles out D as the only statement that wrongly exaggerates the merits of convenience sampling for generalisation, while implicitly accepting the rest as accurate.

External validity is concerned with whether findings obtained in a particular study context hold under different conditions. It includes population validity, which deals with other groups of people, and ecological validity, which addresses other settings and situations. High external validity implies that results are not highly context-bound. Therefore, the generalisability described in the stem is called external validity.

Option A:
Internal validity relates to whether observed effects can be attributed confidently to the treatment rather than to extraneous factors. It focuses on causal inference inside the study, not on generalisation beyond it.

Option B:
Content validity refers to how well test items represent the domain of content, such as curriculum topics, and is primarily a measurement property rather than a property of study generalisation.

Option C:
External validity is influenced by factors such as sampling, realism of settings and interaction of selection with treatment. Researchers may conduct replication studies in diverse contexts to strengthen external validity. Because the stem refers explicitly to other populations, settings and times, this option is correct.

Option D:
Criterion validity deals with how well a test correlates with a relevant outcome measure or criterion, not with generalisability of results across contexts.

Field research takes place in the natural setting where the behaviour or phenomenon normally occurs, such as classrooms, communities or workplaces. The researcher observes or interacts with participants in real-life contexts, often accepting less control over extraneous variables than in laboratory studies. This design enhances ecological validity because it reflects natural conditions. Since the stem describes a study conducted in the natural environment with limited control over extraneous variables, field research is the correct term.

Option A:
Field research allows researchers to capture complex social interactions, contextual influences and authentic behaviour that may not appear in artificial environments. Although this reduces experimental control, the gained realism improves the applicability of findings to real-world situations. These features align well with the stem’s emphasis on natural setting and limited control.

Option B:
Laboratory research is conducted in highly controlled environments where extraneous variables can be manipulated or held constant, often at the expense of naturalness. This differs from field research, which sacrifices some control for realism. Therefore, laboratory research is not the best fit for the situation described.

Option C:
Library research focuses on reviewing and synthesising existing literature, documents and theoretical contributions without collecting new primary data in natural settings. While important, it is conceptually different from studies observing phenomena directly in the field. Hence, library research is not the correct completion.

Option D:
Meta-analytic research statistically combines results from multiple empirical studies to summarise overall patterns of findings. It is a secondary research technique and does not involve direct observation in natural environments. Consequently, meta-analytic research does not match the description in the stem.