The English Wikipedia article on intentionality bias (the source already cited on this entity) describes the concept in a short lead paragraph with an empty References section and names no year, paper, or author for when the bias was first described or named; a full raw-extract read of the article contains no four-digit year at all.
What would resolve this A citable paper, textbook, or reference work naming the year and author or authors who first described or coined the term intentionality bias.
Openhistory of psychologyWikipedia: Intentionality bias