Testing Competing Theories with Hypotheses
Among the strongest hypotheses are those formulated to distinguish between competing scientific theories. In this scenario, researchers identify two theories that offer conflicting explanations for the same phenomenon. They then design a study and derive a single hypothesis where each theory implies a mutually exclusive outcome. Because the predictions are opposite, observing the study's results will confirm one theory's prediction while simultaneously disconfirming the alternative.
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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.
Define the term 'hypothesis' and explain its role within the hypothetico-deductive method. What are hypotheses derived from, and what does it mean for a theory when a hypothesis derived from it is disconfirmed?
Based on the hypothetico-deductive method, explain why this study's outcome does not automatically disprove the psychologist's broader theory that chronic stress impairs spatial memory. What should the psychologist do next with their theory?
A psychology researcher wants to test the theory that high social support buffers against physiological stress. Apply the hypothetico-deductive method by writing a specific, testable hypothesis that could be evaluated in an empirical study.
In the context of scientific research, which of the following best defines a hypothesis?
In the hypothetico-deductive method, finding empirical evidence that disconfirms a specific hypothesis necessarily proves that the underlying theory is completely incorrect.
Dr. Chen is conducting research on social media and mental health. Arrange his actions in the correct order to illustrate the application of the hypothetico-deductive method, starting from the broadest conceptual framework and ending with the evaluation.
A research team is investigating the relationship between social media and mental health. Analyze their research process and match each statement from their study to its corresponding role in the hypothetico-deductive method.
A researcher tests a specific prediction derived from a broad psychological theory. The empirical data strongly contradict the prediction, leading the researcher to publish a claim that the underlying theory is completely invalid. A peer reviewer critiques this conclusion, pointing out a logical flaw in the researcher's reasoning: while the study successfully disconfirmed the specific _____, this does not necessarily mean the broader theory itself has been disproved.
According to the hypothetico-deductive method, from which of the following are hypotheses directly derived?
Based on the hypothetico-deductive method, arrange the following steps in the correct logical order to demonstrate how a scientific idea is conceptualized and evaluated.
Dr. Rivera is investigating social facilitation, a broad psychological framework suggesting that people perform better on familiar tasks in the presence of others. For her specific experiment, she states that professional cyclists will complete a 10-kilometer track significantly faster when riding alongside a competitor than when riding alone. This specific, testable prediction regarding the outcome of her study is known as a(n) _____.
A research team investigates the theory of cognitive dissonance by testing the specific prediction that participants paid $1 for a boring task will report liking it more than those paid $20. If the empirical data reveal that both groups disliked the task equally, an analysis of the hypothetico-deductive method dictates that the underlying theory of cognitive dissonance has been definitively disproved.
Evaluate each of the following researchers' methodological decisions. Match each research action to the most appropriate methodological critique based on the role of a hypothesis in the hypothetico-deductive method.
Definition of a Hypothesis
Which of the following best describes a hypothesis in the context of scientific research?
If an empirical study fails to support a specific hypothesis, the broader scientific theory from which that hypothesis was derived is automatically considered disproved.
A cognitive psychologist is investigating how sleep affects problem-solving. Match each statement from their research process to the correct component of the hypothetico-deductive method.
A clinical psychologist studying social anxiety drafts three statements during their research process. Arrange these statements in order from the most abstract conceptual level (the theory) to the most specific and concrete empirical level (the observation/data).
A peer reviewer recommends rejecting a manuscript, arguing that because the study's data failed to support the expected outcome, the researchers' entire theoretical framework is invalid. You evaluate this critique as logically flawed because, while empirical testing is crucial, disconfirming a single specific ____ does not automatically mean the broader underlying theory has been disproved.
In the context of the hypothetico-deductive method, from what source are hypotheses directly derived?
According to the hypothetico-deductive method, which of the following statements best explains the relationship between a theory and a hypothesis?
Dr. Kripke is investigating the relationship between physical exercise and mood. He states: 'Participants who run on a treadmill for 30 minutes will score significantly lower on a standardized depression inventory than participants who sit quietly for 30 minutes.' This specific prediction regarding the outcome of his particular empirical study serves as the researcher's ____.
Dr. Lin is investigating cognitive load. Using the hypothetico-deductive method, she starts with a broad theory and derives a specific prediction: participants studying with background music will score lower on a memory test than those studying in silence. Her empirical study reveals no difference in test scores between the two groups. How should Dr. Lin analyze this outcome concerning her hypothesis and the underlying theory?
Based on the hypothetico-deductive method, evaluate the methodological soundness of the following research practices. Match each research practice to its correct evaluation.
Bridging Ideas and the Real World
Which of the following best defines a hypothesis in the context of scientific research?
If a researcher conducts an empirical study and the results fail to confirm their hypothesis, this outcome definitively proves that the broader theory from which the hypothesis was derived is incorrect.
Dr. Lopez is studying how social interaction affects stress. Match each component of her research process to the correct concept based on how hypotheses relate to theories and empirical testing.
Analyze the logical progression of the hypothetico-deductive method in a psychological study on memory. Arrange the following components of the researcher's scientific process in the correct structural order, from the broadest conceptual framework to the final evaluation.
While critically evaluating a colleague's research report, you notice a significant logical leap: the colleague claims an overarching theory of memory is entirely false simply because their specific experimental data did not turn out as expected. To correct their flawed conclusion, you explain that empirical testing only directly disconfirmed their specific ____, which does not necessarily disprove the broader theory.
In the hypothetico-deductive method, from which of the following are hypotheses directly derived?
In the context of the hypothetico-deductive method, which statement best explains the conceptual relationship between a scientific theory and a hypothesis?
Dr. Sato relies on the overarching theory of state-dependent memory. To conduct her research, she formally states: 'Students who consume caffeine while studying will score significantly higher on their final exam if they also consume caffeine during the exam.' In the hypothetico-deductive method, this specific, empirical prediction about her study's outcome is known as a ____.
A psychology research team is investigating cognitive fatigue. Analyze the components of their research process described below and match each scenario description to its structural role in the hypothetico-deductive method.
You are reviewing a research grant proposal that claims to rigorously follow the hypothetico-deductive method. The researchers outline a plan to first conduct exploratory empirical observations, formulate a specific hypothesis based entirely on those observations, and then construct a broader theory to explain the hypothesis. You should evaluate this proposal as a valid application of the hypothetico-deductive method.
In the context of scientific research, which of the following statements best describes a hypothesis?
If an empirical study disconfirms a specific hypothesis, the broader scientific theory from which that hypothesis was derived is automatically proven false.
A psychologist is using the hypothetico-deductive method to investigate how children learn aggressive behavior. Arrange the researcher's actions in the correct sequence, demonstrating how a hypothesis is derived and tested.
A cognitive psychologist is investigating the relationship between sleep and memory. Analyze the researcher's statements below and match each to its corresponding role in the hypothetico-deductive method.
A peer reviewer is evaluating a manuscript in which an author claims that their single failed experiment completely disproves a broad theory of human memory. The reviewer correctly critiques this conclusion by pointing out that according to the hypothetico-deductive method, the failed empirical test only directly disconfirms the researcher's specific _____, rather than automatically invalidating the underlying theory.
A ____ is a specific prediction regarding the outcome of a particular scientific study.
Which of the following best describes the conceptual relationship between a scientific theory and a hypothesis within the hypothetico-deductive method?
Dr. Singh explicitly predicts that participants in a 9:00 AM problem-solving group will solve more puzzles correctly than those in a 3:00 PM group, based on a broader theory of circadian rhythms. If her empirical study reveals that both groups actually solve the exact same number of puzzles, she must immediately conclude that the underlying theory of circadian rhythms has been completely disproved.
Dr. Chen is investigating the effects of sleep deprivation on cognitive performance. Based on a broad neurocognitive theory of fatigue, she derives the specific hypothesis: 'Participants sleep-deprived for 24 hours will commit more errors on a continuous performance task than well-rested participants.' After running the experiment, Dr. Chen finds no significant difference in error rates between the two groups.
Which of the following represents a correct analysis of this outcome using the hypothetico-deductive method?
A psychology peer review committee is evaluating the conclusions researchers drew from their hypothesis tests. Based on the hypothetico-deductive method, match each researcher's conclusion to the correct evaluation of their reasoning.
Example of Deriving a Hypothesis from Habituation Theory
Testing Competing Theories with Hypotheses
Which of the following accurately describes one of the main strategies researchers use to derive a hypothesis from a scientific theory?
A researcher notices that an established theory of social conformity describes an internal cognitive mechanism that has never been directly measured in any published study. The researcher then creates a hypothesis predicting specific observable outcomes if that mechanism operates as the theory claims. This approach illustrates deriving a hypothesis by identifying an untested component within a theory and designing an empirical test for it.
A researcher is deriving a hypothesis from a theory by determining what the theory logically implies for a specific research question. Arrange the steps of this derivation process in the correct logical order, based on the following scenario regarding memory and environment.
You are designing a research protocol to test a specific unobserved mechanism within 'Self-Determination Theory' called 'autonomous internalization.' This process posits that individuals only integrate external rules into their own value systems if they perceive a high degree of choice during the initial learning phase. If you are applying the strategy of isolating an unobserved component to derive your hypothesis, which of the following would you construct as your primary testable prediction?
A researcher wants to derive a hypothesis by focusing on a specific internal process within a theory that has never been measured. Arrange the steps of this strategy in the correct logical order.
Researchers use specific strategies to derive testable hypotheses from theories. Match each research scenario with the hypothesis-derivation strategy it illustrates.
Researchers derive testable hypotheses from scientific theories using specific strategies and conceptual building blocks. Match each term to its correct description.
When a researcher evaluates a scientific theory's utility for a novel research question, they must judge whether the theory's internal logic successfully _____ a specific answer that can be empirically tested.
A cognitive psychologist is studying decision-making. They identify a specific, unmeasured component within an established decision theory and design an experiment with a hypothesis specifically meant to measure it. True or False: In doing so, the researcher is using the strategy of analyzing whether an existing theory logically implies an answer to a research question.
When evaluating how to test the boundaries of a developmental theory, a researcher decides to focus on a theoretical construct that has never been measured or seen in previous literature. To evaluate this specific part of the theory, the researcher must generate a hypothesis to empirically test that specific _____ element.
Write a concise response describing the two main strategies that researchers use to derive a hypothesis from a scientific theory.
Based on the two main strategies for deriving hypotheses, which approach is Dr. Rivera preparing to use, and why does her situation fit this strategy? Justify your decision.
A researcher forms an interesting question: 'Does listening to classical music improve focus during complex math tests?' Apply the first strategy of hypothesis derivation to briefly explain what the researcher's next step should be.
Learn After
Example of Testing Competing Theories: Self-Judgment
What is the primary advantage of formulating a single hypothesis to distinguish between two competing scientific theories with mutually exclusive outcomes?
A researcher notices that Theory A predicts participants will perform better on a memory task under noisy conditions, while Theory B predicts they will perform worse. She designs a single experiment to test both predictions at once. If the results show that participants performed worse under noisy conditions, this outcome would provide evidence supporting Theory B while simultaneously counting as evidence against Theory A.
A researcher is studying memory. Arrange the following steps in the correct logical order to implement the strategy of testing the competing theories of 'Trace Decay' and 'Interference' using a single hypothesis.
A researcher is testing two competing theories regarding the effect of background music on study efficiency. Theory A (Cognitive Load Theory) proposes that certain music reduces stress and cognitive load, predicting higher test scores with music. Theory B (Distraction Theory) proposes that music acts as a distractor, predicting lower test scores with music. Match the following research outcomes or study components with their logical role in testing these competing theories.
Imagine you are designing a critical experiment to adjudicate between two rival theories of 'Forgetting.' Theory A () posits that memories 'decay' over time purely due to the passage of time. Theory B () posits that memory loss occurs only because 'new information' interferes with the old. To create a mutually exclusive test, you decide to have participants learn a list of words and then sit in a 'quiet, dark room' with no new stimulation for one hour. Which of the following research hypotheses 'Creates' the most logically sound mutually exclusive test for these theories?
In the strategy for testing competing theories, researchers derive a single hypothesis where the different theories imply mutually exclusive outcomes.
Match each component of the strategy for testing competing theories with the description that best reflects its logical role in a psychological research study.
When judging the scientific merit of a research design intended to adjudicate between two rival theories, a researcher must ensure that the study tests a single hypothesis where the theories predict _____ outcomes, so that the empirical results cannot be consistent with both explanations simultaneously.
A cognitive psychologist is designing a study to adjudicate between two competing theories of reading development. Theory A proposes that children learn to read whole words by sight (direct visual route), predicting that word frequency will affect reading speed but spelling regularities will not. Theory B proposes that children decode words letter-by-letter (phonological route), predicting that spelling regularities will affect reading speed regardless of word frequency.
To test these, the researcher designs a single experiment measuring reading speeds for highly irregular words vs. highly regular words of equal frequency. By designing a study where each theory predicts a mutually exclusive outcome, a finding that spelling regularities have a massive impact on speed will confirm Theory B's prediction while simultaneously _____ Theory A.
A cognitive-social psychologist is designing a study to adjudicate between two competing theories of social facilitation: 'Drive Theory' (positing that the mere physical presence of others is sufficient to increase arousal and impair complex task performance) and 'Evaluation Apprehension Theory' (positing that arousal increases only when the audience is capable of evaluating the performance).
To test these, the researcher places participants in a room to perform a difficult, complex maze task under one of three conditions: alone, in front of an attentive audience, or in front of a blindfolded audience (physically present but unable to evaluate).
Analyze the logical progression of this theoretical adjudication. Arrange the steps below in the correct order, starting with identifying the underlying conflict and ending with drawing the appropriate conclusion if the blindfolded-audience group performs just as well as the alone group.