<p class="western" lang="en-US" align="JUSTIFY"> The primary goal of time estimation research is to determine factors that result in the relative accuracy of these estimations and/or systematic distortion wherein the relevant time span is either under- or over- estimated. Within this scheme of categorization, four factors are of particular theoretical interest because they are assumed to directly influence the cognitive mechanism responsible for duration judgment. An experiment was conducted using 180 subjects to determine the effects of four factors on time estimation: cognitive load (low, medium, and high), actual duration (short vs. long), method of time judgment (verbal estimation vs. reproduction), and paradigm (prospective vs. retrospective). Analysis of variance was used to analyze the data. Time estimation data were analyzed using directional and absolute error. For directional error, all the main effects and few interactions were significant. For absolute error, main effects of paradigm and cognitive load as between subjects and main effect of actual duration as within subjects were significant; some interactions were also significant. In general, there was overestimation of short duration in all the conditions under prospective paradigm. Under retrospective paradigm, there was underestimation of time judgment. Time estimation under prospective paradigm was more accurate than under retrospective paradigm. Time judgment was more accurate under verbal estimation as compared to reproduction method. The results are interpreted in the light of existing literature.</p><p class="western" lang="en-US"> </p><p class="western" lang="en-US" align="JUSTIFY"> </p><p class="western" lang="en-US" align="JUSTIFY"><em>Keywords: </em></p><p class="western" lang="en-US" align="JUSTIFY"> </p><p class="western" lang="en-US" align="JUSTIFY"> </p>