The spread of mental contamination

Fear of contamination can be evoked following physical contact with a dirty, harmful or polluted item, person, or place (contact contamination) or in the absence of physical contact with a contaminant (mental contamination). The spread of contact contamination does not degrade over successive degrees of removal from the contaminated source. However, to date, the spread of mental contamination has not been empirically investigated. This study aimed to examine the spread and degradation of mental contamination.

The paradigm of Tolin et al. (2004) was adapted. Feelings of mental contamination were evoked, and participants were asked to transfer these feelings to an uncontaminated pencil by touching it (contact condition) and without touching it (no contact condition).

Seventy-two percent of participants in the contact condition and 48% participants in the no-contact condition reported being able to transfer contamination to a clean pencil, demonstrating that mental contamination transfers both with and without contact. In both conditions, the mental contamination subsequently spread to a series of 12 neutral pencils without degradation.

These findings suggest that mental contamination can be transmitted and spread in the absence of physical contact, similar to contact contamination.