Psychic Research Methods and Evidence 3 — Questions and Answers
Question 1: What is the significance of using a Random Number Generator (RNG) in parapsychology experiments?
- It replaces the need for human subjects entirely
- It provides an unbiased, unpredictable target sequence that eliminates patterns a subject might exploit (Correct answer)
- It ensures the experimenter selects targets fairly
- It measures the psychic energy output of the participant
Correct answer: It provides an unbiased, unpredictable target sequence that eliminates patterns a subject might exploit
RNGs produce truly random target sequences, preventing participants from using unconscious pattern recognition to inflate hit rates.
Question 2: In the context of psychic research, what does 'replication' specifically require?
- The same experimenter must repeat the study multiple times
- Independent researchers obtain similar results under comparable controlled conditions (Correct answer)
- All previous studies must be cited before conducting a new experiment
- The same participants must be retested at least three times
Correct answer: Independent researchers obtain similar results under comparable controlled conditions
Replication demands that different independent research teams reproduce an effect under similar conditions, distinguishing genuine phenomena from one-off flukes.
Question 3: Which control condition best tests whether a 'psychic reader' is using cold reading rather than genuine psi?
- Having the reader perform with no audience present
- Providing fabricated biographical details and measuring if the reader still scores highly (Correct answer)
- Increasing the number of target items in the session
- Conducting the session in complete darkness
Correct answer: Providing fabricated biographical details and measuring if the reader still scores highly
If a reader accepts false information and constructs an accurate-seeming reading from it, this demonstrates cold reading techniques rather than anomalous knowledge.
Question 4: What is the Sheep-Goat Effect in psi research?
- The tendency for psychic claims to be stronger in rural populations
- Believers in psi (sheep) tend to score above chance while skeptics (goats) tend to score at or below chance (Correct answer)
- The finding that animal subjects outperform human subjects in ESP tasks
- A statistical artifact produced by motivated reasoning in believers
Correct answer: Believers in psi (sheep) tend to score above chance while skeptics (goats) tend to score at or below chance
The Sheep-Goat Effect, identified by Gertrude Schmeidler, suggests that participants' prior belief in ESP predicts whether their scores exceed or fall below mean chance expectation.
Question 5: Why is 'optional stopping' — ending a study when results look favorable — considered a methodological problem?
- It violates the informed consent of participants
- It inflates the Type I error rate, making chance results appear statistically significant (Correct answer)
- It reduces the power of the statistical test
- It requires approval from an institutional review board
Correct answer: It inflates the Type I error rate, making chance results appear statistically significant
Stopping data collection contingent on favorable interim results increases the probability of a false positive well above the nominal alpha level.
Question 6: What is the purpose of a 'stacking effect' control in precognition research?
- To prevent participants from physically stacking cards during a guessing task
- To account for the bias introduced when one person guesses multiple times against the same target pool (Correct answer)
- To measure whether psychic impressions accumulate over a session
- To ensure the same target is never repeated within a single trial
Correct answer: To account for the bias introduced when one person guesses multiple times against the same target pool
The stacking effect arises when multiple calls target the same pool, inflating correlations; correcting for it prevents artificially elevated hit rates.
Question 7: In evaluating testimonial evidence for psychic ability, why is 'confirmation bias' a significant concern?
- Eyewitnesses tend to exaggerate psychic events to gain social approval
- People disproportionately remember and report hits while forgetting misses, distorting perceived accuracy (Correct answer)
- Psychics deliberately select only their most impressive testimonials for publication
- Testimonial evidence is always fabricated and therefore unreliable
Correct answer: People disproportionately remember and report hits while forgetting misses, distorting perceived accuracy
Confirmation bias leads observers to encode successful predictions more strongly than failures, creating a subjective sense of high accuracy that doesn't reflect actual performance.
Psychic Research Methods and Evidence 3
What is the significance of using a Random Number Generator (RNG) in parapsychology experiments?