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Characteristics of a Good Hypothesis
An effective scientific hypothesis typically demonstrates three fundamental characteristics that allow it to be rigorously evaluated through empirical investigation. First, it must be testable and falsifiable, meaning it can be investigated and potentially disproven. Second, it must be logical, meaning it is informed by structured reasoning, existing theories, or prior observations. Third, it must be positive, actively asserting that a specific effect or relationship exists rather than claiming that it does not.
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Research Methods in Psychology - 4th American Edition @ KPU
Related
Deductive Reasoning
Generating Hypotheses
Example of a Non-Testable Hypothesis
Example of a Hypothesis
Role of Hypothesis Testing in Theory Refinement
Sources of Hypotheses: Observation and Prior Research
The Scientific Standard for Establishing Causality: Controlled Experiments
A researcher is investigating the connection between the amount of time spent on a social media app and users' self-reported levels of happiness. The researcher starts with the general idea that excessive social media use might negatively affect well-being. Which of the following statements represents the most effective and scientifically testable hypothesis for an experiment on this topic?
The 'If-Then' Relationship between Theories and Hypotheses
Testing Competing Theories with Hypotheses
Characteristics of a Good Hypothesis
The Cyclical Process of Scientific Inquiry
Deriving a Hypothesis from the James-Lange Theory
Falsifiability and Confidence in Scientific Research
Requirement of a Hypothesis for Scientific Experiments
A-theoretical Hypothesis
Variable
Population
Which of the following statements best describes a scientific hypothesis?
When an empirical study's results fail to support a specific hypothesis, the broader theory from which that hypothesis was derived is automatically considered disproved.
A psychologist is investigating the relationship between physical activity and mental health. Using the scientific process shown in the image as a guide, match each part of their research process to its correct scientific component.
A psychologist is investigating the relationship between 'social support' and 'physiological stress'. Using the provided scientific method diagram as a guide, arrange the following steps in their correct logical sequence, starting from the broadest conceptual level and ending with the evaluation of that level.
A researcher is developing a study based on the theory that 'social support' buffers the effects of 'stress' on 'immune function'. Following the scientific process shown in the provided image, which of the following represents the most appropriately constructed 'hypothesis' for an empirical test of this theory?
A psychologist evaluates the results of an experiment that fail to support their specific prediction. Instead of discarding the broader theory, they decide to refine its assumptions for a follow-up study. This judgment is scientifically sound because, within the hypothetico-deductive method, the disconfirmation of a specific _____ does not logically necessitate the immediate rejection of the theory from which it was derived.
A(n) _____ is a specific prediction regarding the outcome of a particular scientific study.
A researcher derives a hypothesis from the James-Lange theory of emotion, predicting that participants forced to smile will report higher happiness ratings than those forced to frown. The study's empirical results show no difference in happiness ratings between the groups, thereby failing to support the hypothesis. True or False: This outcome logically disproves the underlying James-Lange theory.
Analyze the relationships between components in the hypothetico-deductive method by matching each component of scientific inquiry to its correct description.
Evaluate the cyclical process of scientific inquiry. Arrange the steps of the hypothetico-deductive method in their correct logical order, starting from the source of the prediction to the ultimate refinement of knowledge.
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Testable and Falsifiable Hypothesis
Logical Hypothesis
Positive Hypothesis
Match each fundamental characteristic of an effective scientific hypothesis with its correct description.
A researcher proposes the following hypothesis: 'Participating in a daily meditation practice has no impact on the stress levels of college students.' Which fundamental characteristic of an effective scientific hypothesis does this statement violate?
A researcher proposes that 'the phase of the moon directly affects human aggression levels' based solely on a personal mystical belief, without any support from existing theories, prior observations, or structured reasoning. In this case, the hypothesis fails to satisfy the fundamental characteristic of being ________.
Arrange the following proposed research hypotheses in order from the most scientifically sound (1) to the least scientifically sound (4), based on the three fundamental characteristics: testable/falsifiable, logical, and positive.
A cognitive psychologist proposes the following hypothesis: 'Adults who practice mindfulness meditation for 30 minutes daily will show improved attention spans, but only if they possess an unmeasurable, undetectable spiritual energy.' When evaluating the rigor of this proposal, it should be considered an effective scientific hypothesis because it actively asserts a positive relationship and attempts to logically account for individual differences.
A researcher is constructing a research hypothesis for a study on the effect of background noise on reading comprehension. Which of the following formulations represents a successful creation of a hypothesis that is simultaneously logical (grounded in prior observation), testable, and positive?
To satisfy the characteristic of being positive, a scientific hypothesis must assert that a specific effect or relationship does not exist.
An effective scientific hypothesis must meet specific criteria to be useful in research. Match each characteristic of a good hypothesis with the statement that best explains its underlying conceptual purpose.
A researcher studying academic performance proposes Hypothesis A: 'Students who sleep at least eight hours per night will score higher on standardized exams than students who sleep fewer than six hours.' A classmate challenges this and instead proposes Hypothesis B: 'There will be no difference in standardized exam scores between students who sleep at least eight hours and those who sleep fewer than six hours.' When the two hypotheses are analyzed against the three fundamental characteristics of a good hypothesis, Hypothesis B fails the _____ characteristic, because it denies that a specific relationship exists rather than actively asserting one.
A researcher initially proposes this hypothesis: 'There will be no effect of sleep deprivation on reaction time.' A mentor points out that the hypothesis does not fully satisfy the three fundamental characteristics of a good hypothesis. Order the following steps from first (1) to last (5) to represent the most defensible sequence for evaluating and revising the hypothesis into one that is scientifically sound.
What are the three fundamental characteristics of an effective scientific hypothesis described in research methods? State each characteristic and provide a brief definition of what it means.
Analyze the researcher's proposed hypothesis. Based on the characteristics of a good hypothesis, identify which two characteristics are violated and explain why the current formulation is inappropriate for empirical psychological research.
A student researcher is studying sleep and memory. They draft the hypothesis: 'There is no difference in recall scores between students who sleep 8 hours and those who sleep 4 hours.' Apply the characteristics of a good hypothesis to rewrite this statement into a single-sentence hypothesis that is positive and logical, assuming that more sleep improves memory.