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Overconfidence in Financial Literacy: Implications for Planners Cover

Overconfidence in Financial Literacy: Implications for Planners

Open Access
|Mar 2024

Figures & Tables

Figure 1.

Scatter plot of self-rated and tested levels of financial literacy
Scatter plot of self-rated and tested levels of financial literacy

Figure 2.

Bland–Altman plot of self-rated and tested levels of financial literacy
Bland–Altman plot of self-rated and tested levels of financial literacy

Figure 3.

Histogram of overconfidence in financial literacy
Histogram of overconfidence in financial literacy

Definitions of variables in study

VariableDefinition
femaledummy variable for gender: 0 indicating male and 1 indicating female
indigenousdummy variable for self-identification of being indigenous Australian: 0 indicating no and 1 indicating yes
above20dummy variable for being 20 years old or above: 0 indicating no and 1 indicating yes
non_Englishdummy variable for speaking a language other than English at home: 0 indicating no and 1 indicating yes
paid_workdummy variable for doing paid work: 0 indicating no and 1 indicating yes
study_bizdummy variable for studying business at university: 0 indicating no and 1 indicating yes
self_rate_avgthe average self-rating on the level of understanding of eight aspects of financial literacy (i.e., budgeting, saving, managing debt, investing, retirement planning, taxation, insurance, and superannuation) each on a five-band Likert scale (i.e., 1 – very low, 2 – low, 3 – fair, 4 – high, and 5 – very high)
test_overallthe total number of correct answers to a panel of 14 quizzes on various aspects of financial literacy
rescaled_test_overallRescaled test_overall to a range between 1 and 5: rescaled_test_overall = 4 x test_overall / 14 + 1
overconfidenceoverconfidence in financial literacy: overconfidence = self_rate_avg - rescaled_test_overall

Operationalisation of financial literacy constructs

ConstructsQuestionsSource
Budgeting, saving, managing debt1. Compound interestLusardi and Mitchell, 2009
2. InflationLusardi and Mitchell, 2009
3. BudgetingMandell, 2008
4. BorrowingMandell, 2008
5. Credit card debtMandell, 2008
Investing6. Risky assetsLusardi and Mitchell, 2009
7. Long period returnsBateman, et al., 2012
Superannuation, retirement planning, and insurance knowledge8. Performance indicatorANZ, 2011
9. Concessional tax rateChardon, 2014
10. Life insurance needMandell, 2008
11. Car insuranceMandell, 2008
Taxation knowledge12. Assessable incomeChardon, 2014
13. Tax payableChardon, 2014
14. Negative gearingChardon, 2014

Numerical summary of self-rated and tested levels of financial literacy in sample

VariableNMMdnSDSkewKurtMinMaxQ1Q3
self_rate_avg3632.682.50.79.62.191.005.002.133.13
test_overall3166.707.002.75.02-.49.0013.005.009.00
Overconfidence316-.23-.25.80.35.15-2.322.09-.79.23

Regression coefficient estimates

Bβtp
Constant-.504--4.090<.001***
female.139.0711.230.220
Indigenous-.063-.013-.222.824
above20-.073-.045-.792.429
non-English.466.1843.193.002***
paid_work.187.1111.897.059*
study_biz.080.035.612.541

Seemingly unrelated regressions of self-rated and tested levels of financial literacy

Unconstrained modelConstrained model
self_rate_avgprescaled_test_overallpself_rate_avgprescaled_test_overallp
female-.454<.001-.594<.001-.526<.001-.526<.001
indigenous.347.193.409.117.379.090.379.090
above20.195.024.268.002.233.001.233.001
non_English.299.030-.168.214.268.052-.139.304
study_biz.057.644-.023.849.016.880.016.880
paid_work.241.009.055.550.145.064.145.064
constant2.748<.0013.251<.0012.86<.0013.14<.001
χ2(d.f.), p35.37(6)<.00146.28(6)<.00155.22(6)<.00150.67(6)<.001
R-squared.105.133.099.128
residuals r, p.441, <.001.432, <.001
joint constraints test: χ2(d.f.), pn.a.7.09(5),.214

Demographics of respondents

DemographicsFrequencyPer cent % (n=302)
Female23879
Indigenous83
20 yrs and above13344
Non-English at home3311
Paid work20367
Studying business4214
Living at home17056
DOI: https://doi.org/10.2478/fprj-2017-0007 | Journal eISSN: 2206-1355 | Journal ISSN: 2206-1347
Language: English
Page range: 31 - 46
Submitted on: May 31, 2017
Accepted on: Jul 30, 2017
Published on: Mar 19, 2024
Published by: Financial Advice Association of Australia
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2024 Laura de Zwaan, Chrisann Lee, Yulin Liu, Toni Chardon, published by Financial Advice Association of Australia
This work is licensed under the Creative Commons Attribution 4.0 License.