A hypothesis is a specific, falsifiable prediction about the relationship between variables. It serves as the starting point for scientific investigation, providing a clear statement that can be tested through empirical research. Unlike a theory, which is a well-substantiated explanation of some aspect of the natural world, a hypothesis is inherently tentative and must be subjected to rigorous testing to determine whether the data supports or refutes the initial prediction.
932
In the context of genetic and psychological research, what does the term 'concordance rate' represent?
A concordance rate is a statistical measure used in twin and family studies to determine the probability that two individuals with shared genes will both develop the same trait or disorder. It is a fundamental metric for estimating the heritability of psychological conditions.
933
Which term describes a systematic approach to collecting and analyzing data based on observation and experience?
Empirical research is based on direct observation or experience rather than theory or pure logic. In psychology, the empirical method involves gathering data through systematic experimentation or observation, ensuring that findings are based on evidence that can be measured and analyzed. This approach is the foundation of the scientific method in psychological research.
934
When a research report presents conflicting viewpoints or relies on the researcher's personal perspective, what is the reader ultimately required to form?
In qualitative or interpretive research, the report may not provide a single objective truth. Instead, it presents multiple perspectives, requiring the reader to critically evaluate the evidence and make an informed decision or judgment regarding the validity and implications of the findings.
935
Which term describes the systematic process of gathering observable evidence, utilizing precise definitions, and ensuring results are replicable?
The scientific method is a structured, systematic process that relies on empirical, observable evidence, precise operational definitions, and the ability to replicate results to establish scientific knowledge. It forms the essential foundation of all scientific inquiry, ensuring that findings are reliable, objective, and verifiable by the broader academic community.
936
Which of the following is generally not considered a defining characteristic of a scientifically sound theory?
Scientific theories must be testable, falsifiable, parsimonious (simple), and generalizable. 'Common sense' is often subjective and can be contradictory, whereas scientific theories rely on empirical evidence and rigorous testing. Therefore, common sense is not a formal criterion for a scientific theory.
937
Which of the following statements is formulated as a testable hypothesis for a psychological experiment?
A scientific hypothesis must be a testable prediction that specifies a relationship between variables. Option C proposes a clear relationship between anxiety levels and social behavior (seeking companionship), which can be operationalized and measured in a controlled experimental setting. Other options are either descriptive observations or correlational statements rather than experimental predictions.
938
What term describes a set of principles or statements that are universally applicable within a specific domain of inquiry?
In the context of scientific inquiry, a law is a descriptive statement or equation that reliably predicts events under certain conditions. Unlike a theory, which explains why something happens, a scientific law describes what happens consistently across a given domain, serving as a foundational principle for further research and application.
939
Which research technique utilizes a pre-defined structure to systematically collect responses from participants?
A structured interview is a quantitative research method where the interviewer follows a rigid set of questions in a predetermined order. This approach ensures that all participants are asked the same questions in the same way, which minimizes interviewer bias and increases the reliability and comparability of the data collected across different subjects.
940
Which of the following are considered fundamental methodologies in educational psychology?
Educational psychology employs various research methods to understand learning and development. The experimental method allows for causal inferences, the genetic (or developmental) method tracks changes over time, and the differential method examines individual differences in learning capabilities. By integrating these diverse approaches, educational psychologists can better understand how different students learn, what factors influence their academic success, and how to design effective instructional interventions that cater to the diverse needs of learners.
