This study is an attemp1 to analyze h e lndiridual merit of the INSTRAT model, whlch h n s a cognltlvc process paradigm, and lhal of the Big6 model, which involves a lunct~onal approach. as tools for enhancing human m~ormation activities and qtitude. The lormcr wds cxamii~ed tluough logical inte~pretations, while the latter was deduced f~om interviews usmg tlie Micro-Momenl Tme-LIII~ method, a key me~hodology used in the Sense-Mahg Approaches. Rcsults indicale. lhal the application oi the INSTRKT model is suilahle Tor developing infoliilatior~ syslerns that can assist users in the stagc of defining informalion needs and search strategies, aid lhal thc application of the Big6 model 1s ilppropriale in lnlormation literacy education or lnformetiol~ aplihide lraining. OS p;o-llculalsignif~ cance is the fact that the study proves for the ikst lime that human infomalion problem-solv~ng bcliavior ~nilezil Snllovs the process delineatcd in [he Big6 model.