▁person ality ▁tra its ▁as ▁most ▁predict ive ▁of ▁other ▁people . ▁ ▁C ave ats ▁have , ▁however , ▁been ▁identified ▁in ▁studying ▁a ▁subject ' s ▁aw aren ess ▁of ▁mental ▁events , ▁in ▁that ▁the ▁process ▁of ▁intros pection ▁itself ▁may ▁alter ▁the ▁experience . ▁ ▁Reg ard less ▁of ▁the ▁valid ity ▁of ▁belief ▁in ▁free ▁will , ▁it ▁may ▁be ▁benef icial ▁to ▁understand ▁where ▁the ▁idea ▁comes ▁from . ▁One ▁contribution ▁is ▁random ness . ▁While ▁it ▁is ▁established ▁that ▁random ness ▁is ▁not ▁the ▁only ▁factor ▁in ▁the ▁per ception ▁of ▁the ▁free ▁will , ▁it ▁has ▁been ▁shown ▁that ▁random ness ▁can ▁be ▁mistaken ▁as ▁free ▁will ▁due ▁to ▁its ▁ind et erm in acy . ▁This ▁mis con ception ▁applies ▁both ▁when ▁considering ▁ones elf ▁and ▁others . ▁Another ▁contribution ▁is ▁choice . ▁It ▁has ▁been ▁demonstrated ▁that ▁people ' s ▁belief ▁in ▁free ▁will ▁increases ▁if ▁presented ▁with ▁a ▁simple ▁level ▁of ▁choice . ▁The ▁specific ity ▁of ▁the ▁amount ▁of ▁choice ▁is ▁important , ▁as ▁too ▁little ▁or ▁too ▁great ▁a ▁degree ▁of ▁choice ▁may ▁neg atively ▁influence ▁belief . ▁It ▁is ▁also ▁likely ▁that ▁the ▁associ ative ▁relationship ▁between ▁level ▁of ▁choice ▁and ▁per ception ▁of ▁free ▁will ▁is ▁influ entially ▁bid irection al . ▁It ▁is ▁also ▁possible ▁that ▁one ' s ▁desire ▁for ▁control , ▁or ▁other ▁basic ▁motiv ational ▁patterns , ▁act ▁as ▁a ▁third ▁variable . ▁ ▁Bel ieving ▁in ▁free ▁will ▁Since ▁at ▁least ▁ 1