Understanding Theories & Hypotheses in Psychology

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Questions and Answers

What distinguishes hypotheses from theories?

  • Hypotheses are general explanations, while theories make specific predictions.
  • Hypotheses are always true, whereas theories can be false.
  • Hypotheses can be beliefs, while theories cannot.
  • Hypotheses are specific predictions that test parts of a theory. (correct)

Which statement best represents the relationship between theories and public belief?

  • Public belief can enhance the quality of a theory.
  • The validity of a theory is independent of how many people believe it. (correct)
  • The more popular a theory is, the more valid it must be.
  • A theory gains credibility through widespread acceptance.

What does the biopsychosocial model explain about behavior?

  • Behavior is determined exclusively by sociocultural influences.
  • Behavior results from a combination of biological, psychological, and sociocultural factors. (correct)
  • Behavior is influenced solely by biological factors.
  • Behavior can be fully explained by psychological factors alone.

What is a principle of parsimony in scientific explanation?

<p>Select the simplest of competing explanations as the best option. (A)</p> Signup and view all the answers

Which skill is essential for developing critical thinking?

<p>Embrace ambiguity and multiple viewpoints. (C)</p> Signup and view all the answers

How can theories aid in scientific investigation?

<p>By providing a framework for generating testable hypotheses. (B)</p> Signup and view all the answers

Which of the following is NOT a component of scientific literacy?

<p>Following popular opinions blindly. (A)</p> Signup and view all the answers

What role do psychological influences play in behavior according to the content?

<p>They include aspects like memories and emotions. (B)</p> Signup and view all the answers

What does Humanistic Psychology primarily focus on?

<p>The rational thought and uniqueness of each individual (B)</p> Signup and view all the answers

Which statement best describes Hebb's Law?

<p>It posits that brain cells that fire together strengthen their connection. (C)</p> Signup and view all the answers

What does Cross-cultural Psychology aim to analyze?

<p>The role of society in shaping behaviors and beliefs (C)</p> Signup and view all the answers

What is the principle of objectivity in scientific research?

<p>That all facts can be independently observed and tested by anyone (C)</p> Signup and view all the answers

Which of the following is NOT one of the characteristics of quality scientific research?

<p>It must align with personal biases. (D)</p> Signup and view all the answers

What does the term 'variable' refer to in scientific research?

<p>The concept or event being manipulated or measured (D)</p> Signup and view all the answers

Which characteristic of scientific research ensures that results can be confirmed through repeated experiments?

<p>Replication (C)</p> Signup and view all the answers

Which statement reflects the concept of subjective observations in scientific research?

<p>They are shaped by the observer's prior beliefs and experiences. (C)</p> Signup and view all the answers

What does determinism propose about events?

<p>Events are governed by lawful, cause-and-effect relationships. (D)</p> Signup and view all the answers

Which temperament is characterized by a tendency to be impulsive and pleasure-seeking?

<p>Sanguine (D)</p> Signup and view all the answers

What does the term 'zeitgeist' refer to?

<p>The general state of beliefs of a culture at a specific time. (C)</p> Signup and view all the answers

What is the focus of clinical psychology?

<p>Diagnosing and treating psychological disorders. (A)</p> Signup and view all the answers

Which belief posits that humans consist solely of physical matter?

<p>Materialism (C)</p> Signup and view all the answers

What was the main contribution of Charles Darwin to psychology?

<p>Theory of evolution by natural selection. (A)</p> Signup and view all the answers

What does psychophysics study?

<p>The relationship between physical and mental phenomena. (D)</p> Signup and view all the answers

What concept did phrenology propose?

<p>Different brain regions correspond to distinct mental traits. (D)</p> Signup and view all the answers

What is a limitation of case studies in research?

<p>They often only provide insights into a single individual. (C)</p> Signup and view all the answers

What characterizes naturalistic observation?

<p>Observation occurs without the subjects' awareness. (C)</p> Signup and view all the answers

How is correlation defined in the context of research?

<p>A degree of association between two or more variables. (D)</p> Signup and view all the answers

If the correlation coefficient is +1.0, what does this indicate?

<p>There is a very strong positive correlation. (A)</p> Signup and view all the answers

What does it mean if the correlation coefficient is zero?

<p>Variables are unrelated to each other. (C)</p> Signup and view all the answers

Why can't correlation be interpreted as causation?

<p>There can be external factors influencing both variables. (A)</p> Signup and view all the answers

Which method involves individuals providing their responses directly?

<p>Self-reporting (D)</p> Signup and view all the answers

What happens in a positive correlation between two variables?

<p>Both variables change in the same direction. (C)</p> Signup and view all the answers

What is the primary role of a Research Ethics Board (REB)?

<p>To oversee the adherence to ethical standards in research (D)</p> Signup and view all the answers

Which of the following must be included in the informed consent process?

<p>The nature of any stimuli participants may encounter (A)</p> Signup and view all the answers

What does the right to withdraw in psychological research entail?

<p>Participants can leave the study without facing any penalties (D)</p> Signup and view all the answers

Which of the following is considered deception in psychological research?

<p>Misleading participants about the study topic (B)</p> Signup and view all the answers

What does the term debriefing refer to in the context of psychological research?

<p>The explanation provided after the study concludes (D)</p> Signup and view all the answers

What does the principle of 'freedom to choose' ensure for research participants?

<p>Participants are not subject to undue pressure or risks for their participation (A)</p> Signup and view all the answers

What kind of risks should researchers inform participants about?

<p>Both physical and psychological risks involved (B)</p> Signup and view all the answers

Which of the following describes informed consent?

<p>Participants are fully informed and voluntarily agree to participate (A)</p> Signup and view all the answers

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Study Notes

Understanding Theories & Hypotheses

  • Theories provide a broad explanation for a phenomenon, encompassing human behavior.
  • Hypotheses are specific predictions derived from theories, used to test particular aspects.
  • Theories evolve through repeated testing and confirmation of hypotheses.
  • A supported hypothesis strengthens the credibility of the corresponding theory.

Evaluating Theories

  • Theories differ from opinions and beliefs; they require evidence and logical reasoning.
  • Not all theories hold equal weight, and multiple theories can coexist regarding complex topics like depression.
  • A strong theory accurately explains past research and generates new hypotheses.
  • The popularity or acceptance of a theory does not determine its quality; evidence matters more.

Biopsychosocial Model

  • This model explains behavior as an interplay of biological, psychological, and sociocultural factors.
  • Biological influences include brain structures, chemicals, hormones, and external substances.
  • Psychological influences encompass memories, emotions, and personality traits.
  • Sociocultural influences encompass family dynamics, peers, ethnicity, and cultural norms.

Scientific Literacy & Critical Thinking

  • Scientific literacy involves understanding, analyzing, and applying scientific information.
  • Critical thinking encourages curiosity and skepticism when evaluating information and personal beliefs.
  • Essential skills for developing critical thinking:
    • Cultivating curiosity.
    • Examining evidence and its source.
    • Identifying assumptions and biases.
    • Avoiding overly emotional reasoning.
    • Tolerating ambiguity and multiple perspectives.
    • Considering alternate viewpoints.

The Principle of Parsimony

  • The simplest explanation for a phenomenon is generally preferred over more complex ones.

Origins of Psychology as a Science

  • Empiricism emphasizes knowledge gained through experience and careful observation, not common assumptions.
  • Determinism proposes that all events are governed by cause-and-effect relationships.

Historical Figures & Concepts

  • Galen's theory of four temperaments linked personality to bodily fluids:

    • Sanguine (blood): impulsive, pleasure-seeking, charismatic.
    • Choleric (yellow bile): ambitious, energetic, potentially aggressive.
    • Melancholic (black bile): independent, perfectionist, introverted.
    • Phlegmatic (phlegm): quiet, relaxed, content with life.
  • Zeitgeist refers to the prevailing beliefs and attitudes of a specific culture and time period.

  • Materialism asserts that humans and living beings are purely physical matter.

  • Dualism posits the existence of non-material aspects of humans, like a mind or soul separate from the body.

Key Contributions in Early Psychology

  • Psychophysics studies the connection between the physical world and its mental representation.
  • Fechner's weight experiment illustrated the principles of psychophysics.
  • Titchener focused on identifying the basic elements of thought processes.

Darwin and the Impact of Evolution

  • Charles Darwin's theory of evolution by natural selection emphasizes the importance of inherited traits that enhance survival and reproduction.
  • Darwin's work extended to understanding behavior; he argued that behaviors also evolve through natural selection.

Emergence of Psychological Fields

  • Clinical psychology specializes in diagnosing and treating mental disorders.
  • Localization of brain function suggests that specific brain areas control particular mental abilities and personality traits.
  • Phrenology (mid-1800s) incorrectly linked skull bumps to mental traits, but contributed to the localization concept.
  • Humanistic psychology emphasizes individual uniqueness, freedom, rational thought, and the distinct nature of humans compared to other animals.

Hebb's Law and Neural Plasticity

  • Hebb's Law states that repeated stimulation between neurons strengthens their connection.
  • This principle supports the idea that neuronal connections can be modified through experience.

Cross-Cultural Psychology

  • Compares individual and group behaviors across cultures.
  • Helps understand the societal influence on behaviors, beliefs, and values.

Cognitive Neuroscience

  • Integrates cognitive psychology and biopsychology.
  • Investigates the neural processes underlying mental functions, such as memory, attention, and language.

Positive Psychology

  • Promotes well-being by fostering self-acceptance and enhancing social relationships.
  • Aims to help individuals thrive and flourish through positive experiences and strengths.

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