Deliverable 4.4 - INSEAD CALT

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AtGentive IST-4-027529-STP - Attentive Agents for Collaborative LearnersFigure 19 - Total number of logins per month, by treatment group and totalNumber of events by typeData were extracted from the log files under the following headings (in some cases, thismeant amalgamating a number of log entry types):TitleEnLvRd Pr OTHERRd MsVi Pl non-HPVi Pl HP-overviewVi Pl HP-personalVi Pl HP-agentsRd Pr SELFVi Pl HPVi Pl HP-newsVi Pl HP-invitationsVi Pl HP-knowledgeVi Pl HP-communityVi Pl HP-watchCr ThCr MsEd MsSe queryMeaningLogged in (Entered System)Logged out (Leave)Read someone else's profile (including any sub-pages)Read message (posting)Visited other (non-home) pagesVisited top-level home pageVisited Personal home pageVisited Agents home pageRead own profile (including any sub-pages)Alternative access to top-level home pageVisited News home pageVisited Invitations home pageVisited Knowledge home pageVisited Community home pageVisited Watch home pageCreated ThreadCreated MessageEdited MessageSearchesFigure 20 - List of log file headingsThe pattern of system use changes very noticeably between the initial period (May toJuly) and the Eagle Racing simulation (September onwards). Therefore, the two timeperiods have been analysed separately. The data are shown in Figure 21 (pre-EagleRacing) and Figure 25 (during Eagle Racing).Pre-Eagle RacingIn the pre-Eagle Racing period, all the measured values appear to differ between groups(see Figure 21), with the Experimental group consistently using the system more thanthe Control group.Del <strong>4.4</strong>: AtGentive Final Evaluation Report page 58
AtGentive IST-4-027529-STP - Attentive Agents for Collaborative Learners6050403020CTLXP100En Lv Rd PrSELFRd PrOTHERRd Ms Vi non-HP Vi HPoverview76543CTLXP210Vi HPVi HP NewsVi HP InvitationsVi HP KnowledgeVi HP personalVi HP agentsVi HP communityVi HP watchCr threadCr MsEd MsSe queryFigure 21 - Pre-Eagle Racing mean system use counts (split over two graphs to allowdifferent scale values)However, a closer examination of the data shows a more complex picture. Firstly, aMann-Whitney test 7 shows that most of the differences are not statistically significantsee Table 15). (Note that the graphs show mean total values in order to clearlydemonstrate differences, whereas the statistical analyses use a ranking-basedalgorithm.) The two variables that are significantly different between treatment groups (atthe 0.05 level) are “Vi place 'homepage - knowledge'” and “Vi place 'homepage -agents'”. (It should be noted that the agent homepage was not very feature-rich for theControl group and was essentially unused, whereas five out of the 12 Experimentalgroup participants used the agent homepage.)7 Significance referred to is at the 0.05 level. Exact significance is quoted to compensate for thesmall sample size. 1-tailed test is quoted as visual inspection of the data shows the Experimentalgroup has consistently greater system useDel <strong>4.4</strong>: AtGentive Final Evaluation Report page 59
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