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The Scientific Method

• Observation:

  • Central starting point of the scientific method.
  • Example: Lizard thermoregulation (lizard sunbathing).

• Question:

  • Defined as the formal statement of an unknown that initiates the scientific method.
  • Note: The instructor will not test on the basic definition of a question.
  • Can be categorized under Tinbergen's four categories regarding animal behavior.

• Developmental Question Example:

  • Is moving to a sunny spot for warmth innate or learned?
  • Addresses whether the behavior is known from birth or learned from parental figures, affecting the lizard's thermoregulation.

• Background Research:

  • A critical step in the scientific method where researchers gather existing information.
  • Can be initiated by any observation, question, or independent background knowledge.

• Hypothesis:

  • Explanation based on assumptions or predictions that make testable predictions.
  • Key Feature: It must be testable.
  • Example Hypothesis: "Sunbathing for warmth in lizards is an innate behavior."
    • Important: It's a statement, not a question.
    • Should ideally take a definitive stance.
    • A weak hypothesis is vague, e.g., "I think it might be an innate behavior."

• Experimental Design:

  • Involves asking how to best validate the hypothesis.
  • Methods:
  • Observational Method:
    • Involves watching and reporting an organism's behavior without manipulating its environment.
    • Example: Observe if juvenile lizards perform sunbathing or if only adults do.
  • Experimental Method:
    • Entails manipulating or changing a variable to see its effect on animal behavior.
    • Requires control conditions.
    • Example: Raise juvenile lizards alone vs. with their parents to compare behaviors.

• Expected Outcomes:

  • Predictions that support or refute the hypothesis depending on the experimental results.
  • Example Scenario: If juvenile lizards exhibit sunbathing, it supports the hypothesis of innate behavior. Contrarily, if they do not exhibit it, the hypothesis is refuted.
    • Alternate experimental outcome: If both raised alone and with parents lizards display the behavior, this supports the hypothesis.

• Summary of Experimental Process:

  • Conduct the experiment as per experimental design.
  • Collect results that may support the hypothesis:
  • If results do not support, refine the hypothesis or reassess the inquiry.
  • "Mysterious third result": Often indicates ambiguity; requires revisiting the experimental design.

Key Definitions

• Scientific Theory:

  • An evidence-based, well-substantiated explanation incorporating facts, laws, inferences, and tested hypotheses.
  • Important Distinction: Scientific theories must be supported by experimental proof, unlike mere hypotheses.

• Fact:

  • Observations repeatedly confirmed and generally accepted as true; these can evolve over time as new data emerges.

• Law:

  • Descriptive generalizations about natural world behavior under specific circumstances.
  • Less focus in this class; more related to physics.

Scientific Biases

• Introduction to Biases:

  • Example: Pinyon Jay behavior study and hypotheses surrounding social hierarchy.
  • Observational Research: Conducted to understand social structure in large flocks of pinyon jays.
  • Initial Hypothesis was centered on the assumption of a male-dominated pecking order.

• Research Actions:

  • Established feeding stations to observe territorial battles among males.
  • Results: No clear aggressive behavior or social structure; instead, observations indicated a lack of dominance.

• Unexpected Findings:

  • Despite hypothesized dominance, the study revealed no belligerent interactions among males.
  • The dominant male role was assumed based on observations that were not robust.
  • Redefined observations after the alpha’s death did not yield anticipated outcomes regarding male dominance transitions.

• Publication Concerns:

  • Published findings described aggressive bird tendencies inaccurately without acknowledging female aggression.
  • Males portrayed inaccurately as the aggressors, leading to skewed scientific interpretations.

Key Concepts of Bias in Research

• Confirmation Bias:

  • The tendency to interpret evidence as supporting pre-existing beliefs or theories; exemplified in the pinyon jay case.

• Occam's Razor (Parsimony Principle):

  • The principle that one should favor the simplest explanation that fits the evidence.
  • Suggests that simpler hypotheses are preferable unless overwhelming evidence suggests otherwise.

Conclusion and Reflection

• Acknowledgment of Bias:

  • Scientists must recognize personal biases affecting research directions and interpretations.
  • The importance of remaining open-minded about animal behaviors which might defy societal norms or expectations.

• Discussion on Observational Studies:

  • The instructor emphasizes recognizing biases in animal behavior research and encourages reflection on preconceived notions regarding 'natural' behaviors.

• Break and Q&A Session:

  • After the lecture, a break is provided for questions, ensuring clarity before transitioning to additional topics.

• Behavioral Observations:

  • Discussion emphasizes documenting animal behavior accurately without bias, ensuring the diverse realities of different species are acknowledged.