Retro-priming, priming, and double testing: psi and replication in a test-retest design

Area of Science:

• Cognitive Psychology
• Parapsychology

Background:

• Recent research has explored anomalous retroactive influences on cognition and affect.
• Previous studies, including an initial retro-priming experiment, have yielded mixed results, necessitating further investigation.

Purpose of the Study:

• To replicate retro-priming effects in participants who previously showed a strong effect.
• To explore correlations between psychological characteristics and retro-priming performance.
• To compare retro-priming with classical priming task performance.

Main Methods:

• A second study was conducted with 28 participants selected from an initial cohort of 162 based on strong retro-priming effects.
• Participants completed retro-priming and classical priming tasks.
• Psychological characteristics including anomalous experiences, mental health, mental boundaries, trauma, and negative life events were assessed.

Main Results:

• The overall retro-priming task yielded non-significant negative results (es = -0.25, ns).
• The classical priming task showed significant results (es = 0.63, p < 0.1).
• No significant psychological correlates were found for the 10 participants who showed positive retro-priming in both studies.

Conclusions:

• The study failed to replicate significant retro-priming effects in a selected high-scoring group.
• Classical priming effects were confirmed, suggesting task-specific validity.
• The findings contribute to the ongoing debate on psi phenomena and the challenges of replicability in parapsychological research.