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MODELLING HOUSEHOLD BEHAVIOUR:
RESPONSE TO MACROECONOMIC
SHOCKS IN THE UK
PAULO ARANA
UNIVERSITY OF ESSEX
28TH OF JUNE 2017
INTRODUCTION AND MOTIVATION
Insolvency Service Agency shows an increment of 9.8% in the
proportion of poor households on debts about the previous year
(2016).
Financial Stability Report (2016) comments on how to reduce
vulnerability to households by increasing caps on loan to income
lending
RESEARCH QUESTION
How do households allocated their assets in response
to macroeconomic shocks?
OBJECTIVES OF THE STUDY
Identify patterns of asset allocation within the WAS
Determining debt relative to their income
Examining whether this debt creates exposure when taking into
account financial shocks
LITERATURE REVIEW (1)
Data mostly gathered from the US and Europe given the availability
of data (SFC, PSID, HFCS)
Literature divided into determinants of allocation of wealth,
household debt and macroeconomic shocks
LITERATURE REVIEW (2)
Studies focused asset allocation (invest or not)
Study Journal Variable of interest Main finding
Ameriks and Zeldes (2004)
Journal of Financial Instability
Age and portfolio changes (US)
As age increases, households become more adamant to include more stocks into their portfolios.
Campbell and Cocco (2007)
Journal of Monetary Economics
Investing wealth (US)
Long-term investors seek to consider opportunities to reinvest wealth at a reasonable rate of return .
Canner et al (1997)
The American Economic Review
Willingness to hold risky assets (US)
Popular advice given by financial advisors does not follow rational behaviour
Cooper and Zhu (2016)
Review of economic dynamics
Influence of age and education for households on stock market participation (US)
Higher amounts of education reduces the costs of participation
Lahey et al (2003) Financial services review
Retirement and allocation of wealth (US)
Newly retirees held a greater amount of fixed income securities before retiring compared to others, signalling a greater degree of risk aversion
Mariotti et al (2014)
Discussion paper (Institute for the Study of Labor)
Wealth diversification across markets (Australia)
Higher amounts of education increases disposition to diversify.
8
LITERATURE REVIEW (3)
Studied focused on household debt Study Journal Variable of interest Main finding
Ampudia et
al (2016)
Journal of
Financial Stability
Shocks to income on
debt (EU)
Debt to income ratios positively affected by income
shocks, particularly to poorer households
Anderloni et
al (2012)
Research in
Economics
Vulnerability indicator
researched (Italy)
DTI ratios are particularly influenced by financial
hardship, whereas house ownership decreases the value
of the vulnerability indicator
Dynan and
Kohn (2007)
Discussion paper
(Division of
Research &
Statistics and
Monetary Affairs)
Determinants of
indebtedness in the US
Increases in age and education seem to increase the
sample’s DTI ratios, mortgages also contributing to this
increase
Studies focused on Macroeconomic Shocks
Study Journal Variable of interest Main finding
Cloyne and
Surico (2014)
Working paper
(Bank of
England)
Effect of income taxes
on household
consumption and
indebtedness (UK)
Mortgages are primarily affected by changes to income
tax than outright house owners
Kick et al
(2014)
Working paper (
European
Central Bank)
Impact of economic
downturn on both
European households
and firms (Germany)
Shocks decrease the amount of asset concentration for
households, primarily risky assets
Tiongson et
al (2010)
Book, The World
Bank.
Identification of
transmission channels
for households
Three channels through which households are affected
are the labour market, product market and the financial
markets
EMPIRICAL FRAMEWORK
Assets Liabilities
Home ownership Credit card use
Deposit/savings accounts Overdraft account
Cash/Investment ISAs Mortgage loans
Fixed term investment
bonds
Company shares
Life insurance
• Based on Brown ands Taylor (2016) – Random effects probit estimation.
EMPIRICAL FRAMEWORK: FIRST STAGE (1)
By identifying the main instruments that households used, I computed the following equation:
𝑌𝑖𝑘 = 1 𝑋𝑖
′𝛽 + 𝜀𝑖 > 0 ,𝑤𝑖𝑡ℎ 𝑘 = 1,2… , 9.
where:
𝑌𝑖𝑘 represents the indicator variable corresponding to the
probability of the household using the instrument, i representing the household and k representing the instrument
𝑋𝑖′𝛽 is a vector of demographic related variables which
accounts for different characteristics of both the household and the household reference person (HRP).
𝜀𝑖 is the regression error term.
EMPIRICAL FRAMEWORK: FIRST STAGE (2)
Demographic variables
HRP
Age (banded)
Gender
Earnings (gross)
Degree
Married
EMPIRICAL FRAMEWORK: SECOND STAGE (1)
Debt to income ratios (DTI)
where 𝐷𝑇𝐼𝑖,𝑡 represents the DTI ratio for household i in time t ( which
corresponds to each wave respectively) , which is defined as the total amount of unsecured debt 𝑡𝑑𝑒𝑏𝑡𝑖,𝑡 over the total amount of
income per household 𝑡𝑖𝑛𝑐𝑜𝑚𝑒𝑖,𝑡 .
𝐷𝑇𝐼𝑖,𝑡 = 𝑡𝑑𝑒𝑏𝑡𝑖,𝑡𝑡𝑖𝑛𝑐𝑜𝑚𝑒𝑖,𝑡
DATA – WEALTH AND ASSETS SURVEY
Linkage within wave and across waves (cross sectional approach
vs. longitudinal approach)
Cross sectional weights used for calibration
Cross sectional approach used to obtain an aggregate amount of
instruments per household
DESCRIPTIVE STATISTICS: ALLOCATION STATISTICS
Variables Wave 1 Wave 2 Wave 3 Wave 4
Unsecured debt
Credit card 41.67% 11.81% 19.88% 17.46%
Overdraft accounts 5.89% 5.64% 5.66% 5.00%
Secured debt
Mortgage loan 43.82% 42.06% 40.37% 38.74%
Housing assets
Home ownership 87.84% 89.26% 84.29% 88.69%
Financial assets
Deposit/Savings account (Ind) 28.08% 31.23% 27.08% 28.48%
Cash/Investment ISA 28.16% 35.64% 33.98% 35.32%
Fixed term investment bonds 5.77% 9.37% 8.85% 7.36%
Shares (Both UK and foreign listed) 10.25% 11.73% 9.29% 9.62%
Another type of assets
Life insurance 14.33% 11.58% 9.59% 9.28%
ESTIMATION RESULTS: ASSET ALLOCATION ( WAVE 1)
Variables (M.E. and S.E.)
Financial instrument
Degree Male married Accom age1 age2 age3
Credit card use
.1378085 .023939 -.0137627 -.0236791 -.0604323 -.018985 .0256666
(.0155859) (.0148634) (.0153479) (.0273907) (.0238218) (.0204237) (.0219797)
Overdrawn account
-.0257398 -.0227651 -.0317027 .0401495 .1083711 .0847494 .052225
(.0134186) (.0130229) (.0131871) (.0224449) (.0218014) (.0194034) (.02056)
Mortgage Contract
.0426555 .0132785 .0547737 -.1428532 .4426007 .4143738 .3072365
(.0165193) (.0161132) (.0164192) (.029545) (.023244) (.0174944) (.0196782)
Savings/Dep
osit accounts
.11696 -.019953 -.1295698 -.064947 -.0982806 -.0829845 -.0690879
(.0180301) (.0178136) (.018209) (.0332484) (.0293676) (.0247288) (.0259804)
Individual
Savings Account
.0532211 -.0594673 .0259719 -.0330253 -.1431474 -.190092 -.0995285
(.018912) (.0185489) (.0192114) (.0353633) (.0302186) (.024902) (.0264737)
Fixed
investment Bonds
.0327963 .0111553 -.0046231 -.0169042 -.1434827 -.1009398 -.0587217
(.0105629) (.0104785) (.0108298) (.0218228) (.0202584) (.0136564) (.0131341)
Shares .121543 .0940361 -.0049569 -.0381271 -.2819949 -.142679 -.0519386
(.0163374) (.0163131) (.0171724) (.0329846) (.0281694) (.0216554) (.0225835)
Insurance -.0173924 .0385822 .0585415 .004888 .2773688 .24208 .1382457
(.0183145) (.0179296) (.0183568) (.0341927) (0284188) (.0231857) (.0248088)
Observations: 4369
ESTIMATION RESULTS: ASSET ALLOCATION (WAVE 2)
Variables
Financial instrument
Degree Male married accom age1 age2 age3
Credit card use .1746617 .0934278 .1479068 -.1075901 -.0359165 .0275575 .068041
(.0335945) (.0317391) (.033522) (.0676962) (.0520709) (.0454169) (.0482817)
Overdrawn account
-.0704858 .002388 .0149211 .1205721 .0982217 .0844741 .0372432
(.0252579) (.0218496) (.02367) (.0378751) (.0366437) (.0333078) (.0362341)
Mortgage Contract
.0117141 .0621037 .1015206 -.095159 .4302827 .3949629 .2701792
(.0309901) (.0285492) (.0301983) (.0569048) (.0402539) (.0329539) (.037769)
Savings/Deposit accounts
.083008 -.0540921 -.0756939 -.0477867 -.1055212 .0303186 -.0324495
(.0351855) (.0324919) (.0351355) (.0659609) (.0521841) (.0460826) (.0487918)
Individual
Savings Account
.1144313 -.0624114 .0227938 -.1300866 -.078604 -.0787167 -.0642499
(.0340502) (.0321705) (.0350263) (.0700141) (.0521075) (.0451778) (.0482118)
Fixed
investment Bonds
.0739036 .0108701 .0066391 -.0860016 -.1743109 -.1046042 -.0885621
(.0197396) (.0192131) (.0212218) (.0539869) (.0362957) (.0241132) (.0254674)
Shares .1447098 .0497331 .030367 -.0889873 -.2684404 -.1206342 -.0404922
(.0233041) (.0238167) (.0266223) (.0580268) (.0465875) (.030645) (.0316229)
Insurance -.0758046 -.0168418 .0611452 -.0002403 .2276711 .1907947 .0897643
(.0318707) (.0301393) (.0321679) (.0593516) (.0473164) (.0401719) (.0429996)
Observations: 902
ESTIMATION RESULTS: ASSET ALLOCATION (3)
Variables
Financial instrument
Degree Male married accom age1 age2 age3
Credit card use .1846797 .134704 .1236406 .2732648 -.0333663 -.0023902 .1161003
(.0422918) (.0402354) (.0442294) (.0953061) (.0679471) (.0583267) (.0583487)
Overdrawn account
.0063725 -.0193317 .004848 -.0740031 .1929625 .0936537 .0579415
(.0285112) (.0272329) (.029481) (.0716151) (.0470811) (.0453059) (.0469097)
Mortgage contract
.0307208 -.0413584 .13395 -.2561061 .4321105 .4071593 .3078242
(.0408681) (.0380418) (.0394475) (.0862111) (.0557852) (.0450981) (.048186)
Savings/Deposit accounts
.2322183 -.0145666 -.0558986 .0108579 -.0329882 -.0020891 -.0618397
(.0420103) (.0422423) (.0457101) (.0975332) (.0694019) (.0595266) (.0602135)
Individual Savings Account
.1933476 -.0670176 .086001 -.0510977 -.0826042 -.1327542 -.2088722
(.0404376) (.0406516) (.0444001) (.094585) (.0655962) (.0560079) (.0565288)
Fixed investment Bonds
.0514182 .001186 .0166822 -.0177927 -.1661474 -.1077486 -.096924
(.0238156) (.022776) (.0257593) (.056592) (.047197) (.0296401) (.0293761)
Shares
.0648646 .0693087 -.0654805 -.0713388 -.2434416 -.0631456 -.1073558
(.0277834) (.0269939) (.0283882) (.0751109) (.0610364) (.0332502) (.0357697)
Insurance -.0430561 -.0504775 -.0379392 .0213879 .1364777 .1626272 .1317854
(.0408417) (.0384909) (.0421448) (.090376) (.0617091) (.0521673) (.052862)
Observations: 541
ESTIMATION RESULTS: ASSET ALLOCATION (4)
Variables
Financial instrument
Degree Male married accom age1 age2 age3
Credit card use
.1879534 .131137 .1867185 -.0038731 -.0240231 -.063891 .0282569
(.0378968) (.0377877) (.0415819) (.0666216) (.0699616) (.0565773) (.0566038)
Overdrawn account
-.0572599 .0016053 -.0175197 -.0870026 .0745224 .0803969 .0231172
(.0290998) (.0269652) (.0294297) (.0589011) (.0497955) (.041612) (.043022)
Mortgage Contract
.04624 .0552967 .0678983 -.1770564 .3868818 .3822321 .2945896
(.0379007) (.0362241) (.0392849) (.058146) (.06027) (.045583) (.0472698)
Savings/Dep
osit accounts
.1598241 -.0539461 -.018606 -.0478786 -.0433379 -.0612053 -.0483008
(.0402696) (.0401625) (.0445143) (.0677934) (.0722954) (.0586716) (.0586145)
Individual
Savings Account
.1330649 -.0445459 .102522 -.0504833 -.0326238 -.1274564 -.1526584
(.0392126) (.0390915) (.0433284) (.0667315) (.0694445) (.0559693) (.0558138)
Fixed
investment Bonds
.0175493 .011899 .0510203 .0363446 -.1060881 -.1105654 -.0437617
(.0170271) (.0169296) (.0230459) (.0229416) (.0393649) (.0292611) (.0191437)
Shares .0819318 .0494611 .0483492 .0352762 -.273355 -.0791615 -.0158422
(.0261809) (.0262899) (.0307484) (.0434815) (.083004) (.0359081) (.0341476)
Insurance -.075526 .0084192 -.044142 -.0813933 .2751836 .1907191 .0894597
(.0366922) (.0361057) (.0403058) (.0601111) (.0652722) (.0493977) (.0492604)
Observations: 602
ESTIMATING THE EFFECT OF MACROECONOMIC
SHOCKS
Stage 3 estimation:
𝐷𝑇𝐼𝑖,𝑡 = 𝛽0 + 𝛽1𝑖𝑛𝑓𝑙𝑡 + 𝛽2𝑖𝑟𝑎𝑡𝑒𝑡 + 𝜀𝑖,𝑡
where 𝐷𝑇𝐼𝑖,𝑡 is defined as the DTI ratios obtained in the previous
step regressed with the general inflation level at time t 𝑖𝑛𝑓𝑙𝑡 and
the interest rate level 𝑖𝑟𝑎𝑡𝑒𝑡.
𝜀𝑖,𝑡 represents the regression’s error term.
ESTIMATION RESULTS: IMPACT OF MACROECONOMIC
SHOCKS (2)
Fig1: DTI ratio frequency over the sample.
ESTIMATION RESULTS: IMPACT OF MACROECONOMIC
SHOCKS (3)
Variables Coefficient Std. Error z P>|z|
Inflation -.0164325 .0468366 -0.35 0.726
Interest rate -.0001662 .0081979 -0.02 0.984
Constant .9722944 .1416598 6.86 0.000
𝜎𝜇=.31697399 𝜎𝑒=.60688668
CONCLUDING REMARKS
Refusal of life-cycle hypothesis.
Marriage doesn’t influence asset market participation.
More complex financial instruments overlooked.
No effect of inflation and interest rates on households.
NEXT STEPS…
Secured Access data (longitudinal purposes)
Exploring other transmission channels
Including financial literacy and exploiting possible regional
differences
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THANKS FOR YOUR ATTENTION!