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TM Project web site: Bruce Thompson Colleen Cook Martha Kyrillidou Glasgow January 19-20, 2004 Quantitative Grounding “22 Items.

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Presentation on theme: "TM Project web site: Bruce Thompson Colleen Cook Martha Kyrillidou Glasgow January 19-20, 2004 Quantitative Grounding “22 Items."— Presentation transcript:

1 TM Project web site: http://old.libqual.org Bruce Thompson Colleen Cook Martha Kyrillidou Glasgow January 19-20, 2004 Quantitative Grounding “22 Items and a Box” Quantitative Grounding “22 Items and a Box” :

2 Score Integrity uReliability uValidity

3 By Language ServiceInfo.Lib as Group n AffectControlPlaceTOTAL American (all)59,318.95.91.88.96 British (all) 6,773.93.87.81.94 French (all) 172.95.90.89.95 1. alpha By Language

4 By University Type ServiceInfo.Lib as Group n AffectControlPlaceTOTAL Comm Colleges 4,189.96.92.89.97 4 yr Not ARL36,430.95.91.88.96 4 yr, ARL14,080.95.90.87.96 Acad Health 3,263.95.92.90.96 alpha by University Type

5 By Consortium ServiceInfo.Lib as Group n AffectControlPlaceTOTAL AAHSL 3,186.95.92.90.96 OhioLINK 7,203.95.91.88.96 Oberlin 2,945.94.88.87.94 Merlin 991.96.92.88.96 NY3R Coll/Uni13,008.95.92.88.96 SCONUL 6,773.93.87.81.94 Alabama 1,203.95.92.89.96 alpha by Consortium

6 n = 59,318; α =.9593 "Corrected" Item ‑ alpha Totalif Item ItemCorrelationDeleted SA01APER.6989.9575 SA04APER.7338.9571 SA07APER.7621.9568 SA10APER.7726.9567 SA12APER.7590.9568 SA15APER.7760.9566 SA17APER.7263.9572 SA20APER.7649.9567 SA23APER.7914.9565

7 n = 59,318; α =.9593 "Corrected" Item ‑ alpha Totalif Item ItemCorrelationDeleted PC02APER.6728.9578 PC11APER.6766.9577 PC16APER.7313.9571 PC21APER.7774.9567 PC25APER.6285.9583 IA03APER.6327.9583 IA14APER.6964.9575 IA18APER.7355.9571

8 n = 59,318; α =.9593 "Corrected" Item ‑ alpha Totalif Item ItemCorrelationDeleted LP05APER.5633.9593 LP09APER.6614.9579 LP13APER.6944.9576 LP19APER.6144.9586 LP24APER.7116.9573

9 Service Affect (n = 71,170 English) SA20APER.80541.22199.27521 SA07APER.80338.27236.20993 SA17APER.79655.20844.22793 SA04APER.77062.29258.17694 SA15APER.73437.34646.24299 SA23APER.73391.34359.27896 SA01APER.71589.29773.16972 SA12APER.71541.32229.25528 SA10APER.68825.35941.28090 Service Affect

10 Library as Place Library as Place (n = 71,170 English) LP13APER.26213.25710.80013 LP05APER.20412.15920.73601 LP09APER.27765.24869.72631 LP24APER.26672.34873.72148 LP19APER.19630.28102.70295

11 Information Control Information Control (n = 71,170 English) IA18APER.29824.73480.28164 PC11APER.29045.71111.19999 IA03APER.24482.70341.18989 PC25APER.21770.68760.22736 PC21APER.41572.65615.30096 PC02APER.37847.63860.16559 PC16APER.33439.61598.36448 IA14APER.28759.58521.39295

12 2. Validity Correlations Validity Correlations Serv_AffInfo_ConLibPlaceTOTALper Serv_Aff1.0000.7113.5913.9061 Info_Con.71131.0000.6495.9029 LibPlace.5913.64951.0000.8053 TOTALper.9061.9029.80531.0000 ESAT_TOT.7286.6761.5521.7587 EOUT_TOT.5315.6155.4917.6250

13 Mean Perceived Scores 2001/2002 Trend (n=34)

14 The Challenge of Score Use u Securing information that contributes meaningfully to planning and improvement efforts at a local level u Providing analytical frameworks that institutional staff can apply without extensive training or assistance u Helping decision-makers understand success of investments u Finding useful inter-institutional comparisons

15 Two Interpretation Frameworks uZone of Tolerance uScore Norms

16 1. Zone of Tolerance uThe distance between minimally acceptable and desired service quality ratings uPerception ratings ideally fall within the Zone of Tolerance

17 Faculty Dimension Summary Note: LibQUAL+  Spring 2002 Survey Results - TAMU. (2002). Vol. 2, p. 42 Average Rating 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 Access to Information Affect of Service Library as Place Personal Control Perceived Range of Minimum to Desired Range of Minimum to Perceived (“Gap”)

18 7 Institution Types 1.Community Colleges 2.Health Sciences 3.Military 4.Colleges/Universities 5.State/Publics 6.United Kingdom 7.French Canadian

19 LibQUAL+™ 2003 Summary Colleges or Universities

20 LibQUAL+™ 2003 Colleges or Universities – Dimension Means

21 LibQUAL+™ 2003 Colleges or Universities – Library Use

22 LibQUAL+™ 2003 Colleges or Universities – Core Questions

23 LibQUAL+™ 2003 Summary Community Colleges

24 LibQUAL+™ 2003 Community Colleges – Dimension Means

25 LibQUAL+™ 2003 Community Colleges – Library Use

26 LibQUAL+™ 2003 Summary Academic Health Sciences

27 LibQUAL+™ 2003 Health Sciences – Dimension Means

28 LibQUAL+™ 2003 Health Sciences – Library Use

29 LibQUAL+™ 2003 Summary Military Institutions

30 LibQUAL+™ 2003 Military Institutions – Dimension Means

31 LibQUAL+™ 2003 Military Institutions – Library Use

32 LibQUAL+™ 2003 Summary State and Public Institutions

33 LibQUAL+™ 2003 State and Public – Dimension Means

34 LibQUAL+™ 2003 State and Public – Library Use

35 LibQUAL+™ 2003 Summary United Kingdom

36 LibQUAL+™ 2003 United Kingdom – Dimension Means

37 LibQUAL+™ 2003 United Kingdom – Library Use

38 LibQUAL+™ 2003 Summary French Canadian

39 LibQUAL+™ 2003 French Canadian – Dimension Means

40 LibQUAL+™ 2003 French Canadian – Library Use

41 2. Score Norms uNorm Conversion Tables facilitate the interpretation of observed scores using norms created for a large and representative sample. uLibQUAL+  norms have been created at both the individual and institutional level

42 Institutional Norms for Perceived Means on 25 Core Questions Note: Thompson, B. LibQUAL+  Spring 2002 Selected Norms, (2002).

43 Response Rates 1. It’s representativesness that counts more than the response rate!

44 Response Rates 2. We only know the lower bound (or minimum) estimate of the response rate, because we don’t know the correct denominator.

45 Response Rate Contexts 1. Response rates are higher for action-oriented surveys, which are not relevant or practical for total market surveys.

46 Response Rate Contexts 2. Survey saturation is tending to lower typical response rates over time.

47 2005 and Beyond 1.Matrix Sampling / Short Forms 2.Software Used for Local/Consortial Assessments 3.“Action Snapshots”

48 LibQUAL+  Related Documents LibQUAL+  LibQUAL+  Web Site http://www.libqual.org LibQUAL+  LibQUAL+  Bibliography http://www.libqual.org/publications/index.cfm Survey Participants Procedures Manual http://www.arl.org/libqual/procedure/lqmanual2.pdf

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