Research Aptitude MCQ collection

1361. In some developed countries like U. S A. and U. K. many psychologists are engaged for diagnosing learning difficulties and trying to remedy them. These psychologists are popularly called

Correct Answer: Correct answer is: (B) School Psychologists.

Exam Relevance: GRE, MCAT, Psychology exams

Difficulty: Moderate

Concept notes: School psychologists are professionals who specialize in diagnosing and addressing learning difficulties in educational settings.

Common Mistakes: Students may confuse school psychologists with other types of psychologists, such as industrial or social psychologists, who have different primary focuses.

Explanations: School psychologists are specifically trained to work within educational environments to diagnose and address learning difficulties. They collaborate with teachers, parents, and other professionals to develop interventions and support strategies for students. This makes them the most appropriate choice for the given context.

Option Analysis:

Option A: Industrial Psychologists focus on workplace issues and employee performance, not learning difficulties in educational settings.
Option B: School Psychologists are the correct choice as they specialize in diagnosing and addressing learning difficulties in educational settings.
Option C: Social Psychologists study social behavior and interpersonal relationships, not learning difficulties in educational settings.
Option D: Experimental Psychologists conduct research and experiments to understand human behavior, but do not typically diagnose or address learning difficulties in educational settings.

Mnemonic: S-P: School Psychologists - Support Students

1362. Psychology is considered a(n) ..... science because it uses observation and experimentation to support its theories.

Correct Answer: Correct answer is: (C) Empirical.

Exam Relevance: AP Psychology, GRE Psychology, MCAT

Difficulty: Easy

Concept notes: Psychology is considered an empirical science because it relies on systematic observation and experimentation to gather data and test hypotheses.

Common Mistakes: Students may confuse empirical with other scientific methods or disciplines, such as physical or astronomical sciences, which do not specifically emphasize observation and experimentation in the same way.

Explanations: Psychology uses empirical methods to support its theories. Empirical science involves the collection of data through observation and experimentation, which is a fundamental approach in psychological research. This method allows psychologists to test hypotheses and theories in a systematic and objective manner.

Option Analysis:

Option A: Physical science focuses on the study of matter, energy, and their interactions, which is not the primary focus of psychology.
Option B: Astronomical science deals with celestial objects and phenomena, which is unrelated to psychological research methods.
Option C: Empirical science involves systematic observation and experimentation, which aligns with the methods used in psychology.
Option D: Computer science focuses on the design and use of computers and computational systems, which is not the primary focus of psychological research.

1363. A researcher selects a probability sample of 100 out of the total population. It is

Correct Answer: Correct answer is: (B) A random sample.

Exam Relevance: AP Statistics, GRE, GMAT

Difficulty: Easy

Concept notes: A random sample is a subset of a population where each member has an equal chance of being selected.

Common Mistakes: Students may confuse random sampling with other sampling methods like stratified or cluster sampling, which involve different selection processes.

Explanations: A random sample is selected in such a way that every individual in the population has an equal probability of being chosen. This ensures that the sample is representative of the population, which is a key characteristic of a random sample.

Option Analysis:

Option A: A cluster sample involves dividing the population into clusters and then randomly selecting entire clusters. This is not the same as selecting individual members randomly.
Option B: A random sample is selected such that each member of the population has an equal chance of being included, which matches the description given.
Option C: A stratified sample involves dividing the population into strata and then sampling from each stratum. This is not the same as selecting individual members randomly.
Option D: A systematic sample involves selecting every nth member from a list. This is not the same as selecting individual members randomly.

Mnemonic: R for Random, R for Representative.

1364. This type of research tests hypotheses and theories in order to explain how and why a phenomenon operates as it does.

Correct Answer: Correct answer is: (C) Explanatory research.

Exam Relevance: GRE, GMAT, Psychology exams, Sociology exams

Difficulty: Moderate

Concept notes: Explanatory research aims to understand the underlying reasons and mechanisms behind a phenomenon.

Common Mistakes: Students may confuse explanatory research with descriptive research, which focuses on describing characteristics of a phenomenon without explaining the underlying reasons.

Explanations: Explanatory research is designed to test hypotheses and theories to explain how and why a phenomenon operates as it does. This type of research goes beyond merely describing the phenomenon and seeks to uncover the underlying causes and mechanisms.

Option Analysis:

Option A: Descriptive research focuses on describing the characteristics of a phenomenon but does not aim to explain the underlying reasons.
Option B: Predictive research aims to forecast future outcomes based on current data but does not necessarily explain the underlying mechanisms.
Option C: Explanatory research tests hypotheses and theories to explain the underlying reasons and mechanisms behind a phenomenon.
Option D: This option is not applicable as the correct answer is identified.

Mnemonic: E for Explanatory, E for Explanation

1365. What is the order of the flow of a scientific paper?

Correct Answer: Correct answer is: (B) Abstract, introduction, materials and methods, results, discussion, conclusion, references.

Exam Relevance: GRE, MCAT, DAT, OAT

Difficulty: Easy

Concept notes: The standard structure of a scientific paper includes an abstract, introduction, materials and methods, results, discussion, conclusion, and references.

Common Mistakes: Students often confuse the order of the sections, particularly placing the abstract or conclusion in incorrect positions.

Explanations: The abstract provides a brief summary of the entire paper. The introduction sets the context and states the research question. The materials and methods section details the experimental procedures. The results section presents the findings. The discussion interprets the results and their implications. The conclusion summarizes the findings and their significance. Finally, the references list all cited works.

Option Analysis:

Option A: Incorrect because the abstract should come before the discussion, and the conclusion should come before the references.
Option B: Correct because it follows the standard order of sections in a scientific paper.
Option C: Incorrect because the references should come at the end, and the abstract should come at the beginning.
Option D: Incorrect because the abstract should come before the introduction, and the materials and methods should come before the results.

Mnemonic: AID MRC: Abstract, Introduction, Discussion, Materials, Results, Conclusion

1366. A phenomenon that occurs when a researcher's expectations or preferences about the outcome of a study influence the results.

Correct Answer: Correct answer is: (C) Experimenter bias.

Exam Relevance: AP Psychology, GRE Psychology, MCAT

Difficulty: Moderate

Concept notes: Experimenter bias occurs when a researcher's expectations or preferences about the outcome of a study influence the results.

Common Mistakes: Students may confuse experimenter bias with other forms of bias, such as selection bias or confirmation bias.

Explanations: Experimenter bias is a phenomenon where the researcher's expectations or preferences about the outcome of a study can influence the results. This can happen through subtle cues given to participants, differences in how data is collected or analyzed, or other unconscious behaviors that affect the study's outcome. The correct answer, experimenter bias, accurately describes this phenomenon.

Option Analysis:

Option A: Placebo is a substance or treatment with no active therapeutic effect, often used in control groups in experiments.
Option B: Case study is a detailed examination of a single subject, group, or event.
Option C: Experimenter bias is the correct term for when a researcher's expectations or preferences about the outcome of a study influence the results.
Option D: None of the above is incorrect as experimenter bias is a valid and recognized phenomenon.

1367. Which characteristics come under Karl Pearson's Coefficient of Correlation?

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: GRE, GMAT, Statistics Exams

Difficulty: Moderate

Concept notes: Karl Pearson's Coefficient of Correlation measures the strength and direction of a linear relationship between two variables. It has several key characteristics.

Common Mistakes: Students often overlook the fact that Pearson's correlation does not imply causation, leading to incorrect interpretations.

Explanations: Karl Pearson's Coefficient of Correlation does not tell anything about the cause-and-effect relationship between variables, making it independent of the origin and scale of the data. It also varies between -1 and +1, where -1 indicates a perfect negative correlation, +1 indicates a perfect positive correlation, and 0 indicates no correlation. Therefore, all the given characteristics are true for Karl Pearson's Coefficient of Correlation.

Option Analysis:

Option A: True, Pearson's correlation does not imply causation.
Option B: True, Pearson's correlation is independent of the origin and scale of the data.
Option C: True, Pearson's correlation coefficient ranges between -1 and +1.
Option D: True, as all the above characteristics are correct.

1368. It is numerical, non-descriptive, applies statistics or mathematics and uses numbers.

Correct Answer: Correct answer is: (D) Quantitative Research.

Exam Relevance: GRE, GMAT, Research Methods Exams

Difficulty: Easy

Concept notes: Quantitative research involves the use of numerical data and statistical methods to analyze and interpret information.

Common Mistakes: Students may confuse quantitative research with qualitative research, which focuses on descriptive, non-numerical data.

Explanations: Quantitative research is characterized by the use of numerical data and statistical methods. It involves collecting and analyzing data that can be quantified, such as measurements, counts, or ratings. This type of research is often used to test hypotheses and make generalizations about a population based on statistical analysis.

Option Analysis:

Option A: Applied Research involves the application of scientific methods to solve practical problems, but it does not necessarily involve numerical data.
Option B: Mixed Research combines both qualitative and quantitative methods, but the question specifically asks for a method that uses numbers.
Option C: Qualitative Research focuses on descriptive, non-numerical data, such as interviews, observations, and textual analysis.
Option D: Quantitative Research involves the use of numerical data and statistical methods, which matches the description in the question.

1369. Which of the following considerations should be kept in mind by the researcher during writing a report?

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: GRE, GMAT, Research Methodology Exams

Difficulty: Moderate

Concept notes: Writing a research report requires adherence to specific conventions to ensure clarity, objectivity, and scientific rigor.

Common Mistakes: Students may overlook the importance of using third-person perspective and past tense, or they might use overly complex or colloquial language.

Explanations: A research report should be written in the third person to maintain objectivity. It should be prepared in past tense as the research has already been conducted. The language should be scientific to ensure precision and clarity, avoiding literary or local dialects that could introduce ambiguity.

Option Analysis:

Option A: Writing in third person is crucial for maintaining objectivity in research reports.
Option B: Using past tense is appropriate as the research has been completed.
Option C: Scientific language ensures clarity and precision, avoiding ambiguity.
Option D: All of the above considerations are essential for writing a high-quality research report.

1370. Hypothesis must have.....

Correct Answer: Correct answer is: (A) Testability.

Exam Relevance: GRE, MCAT, General Chemistry, Physics

Difficulty: Moderate

Concept notes: A hypothesis must be testable to be scientifically valid.

Common Mistakes: Students often confuse testability with applicability, thinking that a hypothesis must be applicable to real-world situations to be valid.

Explanations: A hypothesis must be testable because it needs to be able to be subjected to empirical testing. This means that it should be possible to design experiments or observations that can either support or refute the hypothesis. Testability ensures that the hypothesis can be evaluated through scientific methods.

Option Analysis:

Option A: Testability is the correct answer because a hypothesis must be testable to be scientifically valid.
Option B: Applicability is not a requirement for a hypothesis; it must be testable, not necessarily applicable.
Option C: Durability is not a requirement for a hypothesis; it must be testable, not necessarily durable.
Option D: Measurement is related to testability but is not the primary requirement for a hypothesis.

Mnemonic: Test, Try, Truth

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Research Aptitude MCQ collection - Set 137

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