Please add spaces between words: Aperiodofgoodreturnsalsobooststheinvestors'self-confidence,reducingtheir(psychological)riskthreshold.[23]Anotherphenomenon—alsofrompsychology—thatworksagainstanobjectiveassessmentisgroupthinking.
A period of good returns also boosts the investors' self-confidence, reducing their (psychological) risk threshold.[23] Another phenomenon—also from psychology—that works against an objective assessment is group thinking.