Empiricism and Hypothesis Testing

These flashcards cover key concepts in empiricism, logical positivism, hypothesis testing, and the principles of validity and soundness.

What is empiricism?

The theory that experience is the only source of knowledge about the world.

How does empiricism relate to science?

Scientific thinking and investigation follow the same basic pattern as everyday thinking, relying on experience for knowledge.

Who demonstrated the power of observation in overturning previous ideas?

Semmelweis and Snow are examples of individuals whose observations led to significant changes in understanding.

What is a challenge to simplistic empiricism?

The claim that cholera was caused by miasmas was also based on observation.

How do observation and hypotheses interact?

A detailed account is needed to understand how they influence scientific discovery.

What do observable matters of fact rely on in empiricism?

Simple reports of observable facts, such as color or voltage readings.

What is logical positivism?

A radical form of empiricism based on tracking and anticipating patterns in experience.

What is an example of a logically valid argument?

If P then Q, P; therefore Q.

What indicates an argument is invalid?

The premises can be true while the conclusion is false.

What is validity in logic?

An argument is valid if true premises guarantee a true conclusion.

Define a hypothesis in scientific terms.

A claim that proposes to explain a phenomenon of interest.

What is needed to test a hypothesis?

Observable consequences that can be empirically tested.

What is a test implication?

A type of condition that predicts an outcome based on a hypothesis.

How can we confirm a hypothesis?

By supporting it with successful tests, although it cannot be proven true.

What characterizes a good deductive argument?

It preserves truth; if the premises are true, the conclusion must also be true.

What distinguishes inductive reasoning?

It derives generalizations from specific observations.

What did Hempel propose about scientific inquiry?

It should begin with observation and end with hypothesis testing.

Why is analysis and classification essential in science?

They help connect observed facts to explanations of phenomena.

What limits the objectivity of scientific inquiry?

The influence of creative and potentially flawed thought on hypothesis formulation.

What is the problem with auxiliary hypotheses in testing?

They complicate the determination of which hypothesis is confirmed or refuted.

What is the role of controls in experiments?

To help ensure that unknown factors do not affect the outcomes.

Describe confirmation in hypothesis testing.

A process that supports a hypothesis but does not prove it true.

What is the implication of confirming a test implication?

It supports the hypothesis but does not guarantee its truth.

What can undermine the findings of an experiment?

Faulty auxiliary hypotheses or uncontrolled variables.

What is required for a hypothesis to be scientifically accepted?

It must be testable in principle, with observable implications.

What does it mean if a hypothesis lacks empirical import?

It cannot be tested or evaluated against empirical findings.

What is a scientifically significant hypothesis?

A statement that has test implications and can relate to empirical observations.

How does deduction preserve truth?

By ensuring that valid inferences maintain truth from the premises to conclusions.

Contrast deduction with induction.

Deduction moves from general to specific, while induction generalizes from specific instances.

What does a successful induction rely on?

Multiple observations leading to a broad conclusion.

What does Hempel argue about the conditions of science?

That tentative hypotheses must guide scientific investigations.

How do hypotheses influence data collection?

They determine what data should be gathered and analyzed.

What is the risk of hypotheses in scientific inquiry?

They may introduce biases into the observation and analysis process.

What is the significance of logical fallacies in hypothesis testing?

They indicate potential errors in reasoning when correlating implications with hypotheses.

How does Hempel characterize the relationship between hypotheses and confirmation?

Testing gives varying degrees of confirmation without proving hypotheses outright.

What role do observational data play in confirming a hypothesis?

They provide evidence that can strengthen the belief in a hypothesis.

What principle safeguards scientific objectivity?

Hypotheses must withstand critical scrutiny and testing.

How does empirical testing relate to knowledge acquisition?

It is the sole pathway to gaining genuine knowledge, avoiding philosophical meaninglessness.

Why is the structure of logical arguments important?

It forms the basis for evaluating the validity and soundness of scientific claims.

What does success in hypothesis testing indicate?

While support for the hypothesis, it does not confirm its absolute truth.