My jaw just about hit the floor when I read this paper.
It is commonly believed that psychic ability, like many mental and physical traits, runs in families. This suggests the presence of a genetic component. If such a component were found, it would constitute a biological marker of psychic ability and inform environmental or pharmacologic means of enhancing or suppressing this ability.
On the one hand, almost every human trait has some genetic component. On the other hand, shouldn’t you demonstrate that a trait exists before searching for its genetic correlates? The combination of science and nonsense in this paper–seemingly without irony–is disconcerting, like discovering that Newton spent a huge amount of his time trying to discern hidden codes in the Bible.
On finding psychics and matched case-controls, “individuals with indications of psychotic or delusional tendencies were excluded from further consideration.” Ok, then.
Oh, in case you are wondering:
…none of the protein-coding sequences (i.e., exons) showed any variation that discriminated between cases and controls. However, a difference was observed in the intron (i.e., non-protein-coding region) adjacent to an exon in the TNRC18 gene (Trinucleotide Repeat-Containing Gene 18 Protein) on chromosome 7. This variation, an alteration of GG to GA, was found in 7 of 9 controls and was absent from all psychic cases.
The most conservative interpretation of these results is that they result from random population sampling. However, when the results are considered in relation to other lines of evidence, the results are more provocative. Further research is justified to replicate and extend these findings.
Hat tip: Jonatan Pallesen.