Background: An important aspect of successful aging is maintaining the ability to solve everyday problems encountered in daily life. The limited evidence today suggests that everyday problem solving ability increases from young adulthood to middle age, but decreases in older age. Objectives: The present study examined age differences in the relative contributions of fluid and crystallized abilities to solving problems on the Everyday Problems Test (EPT). We hypothesized that due to diminishing fluid resources available with advanced age, crystallized knowledge would become increasingly important in predicting everyday problem solving with greater age. Method: Two hundred and twenty-one healthy adults from the Dallas Lifespan Brain Study, aged 24-93 years, completed a cognitive battery that included measures of fluid ability (i.e., processing speed, working memory, inductive reasoning) and crystallized ability (i.e., multiple measures of vocabulary). These measures were used to predict performance on EPT. Results: Everyday problem solving showed an increase in performance from young to early middle age, with performance beginning to decrease at about age of 50 years. As hypothesized, fluid ability was the primary predictor of performance on everyday problem solving for young adults, but with increasing age, crystallized ability became the dominant predictor. Conclusion: This study provides evidence that everyday problem solving ability differs with age, and, more importantly, that the processes underlying it differ with age as well. The findings indicate that older adults increasingly rely on knowledge to support everyday problem solving, whereas young adults rely almost exclusively on fluid intelligence.

Keywords:
Cognition, Everyday problem solving, Age-related changes, Intelligence
1.
Willis SL: Everyday cognitive competence in elderly persons: conceptual issues and empirical findings. Gerontologist 1996;36:595-601.
2.
Diehl M: in Everyday competence later life: current status and future directions. Gerontologist 1998;38:422-433.
3.
Denney NW, Pearce KA: A developmental study of practical problem solving in adults. Psychology Aging 1989;4:438-442.
4.
Thornton WL, Paterson TSE, Yeung SE: Age differences in everyday problem solving: the role of problem context. Int J Behav Dev 2013;37:13-20.
5.
Heidrich SM, Denney NW: Does social problem solving differ from other types of problem solving during the adult years? Exp Aging Res 1994;20:105-126.
6.
Kimbler KJ: Everyday problem solving and instrumental activities of daily living: support for domain specificity. Behav Sci (Basel) 2013;3:170-191.
7.
Tucker-Drob EM: Neurocognitive functions and everyday functions change together in old age. Neuropsychology 2011;25:368-377.
8.
Ackerman PL: A theory of adult intellectual development: process, personality, interests, and knowledge. Intelligence 1996;22:227-257.
9.
Park DC, Lautenschlager G, Hedden T, Davidson NS, Smith AD, Smith PK: Models of visuospatial and verbal memory across the adult life span. Psychology Aging 2002;17:299-320.
10.
Schaie KW, Willis SL, Caskie GI: The Seattle Longitudinal Study: relationship between personality and cognition. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2004;11:304-324.
11.
Craik FI, Jennings JM: Human memory; in Craik FI, Salthouse T (eds): The Handbook of Aging and Cognition. Hillsdale, Lawrence Erlbaum Associates, 1992, pp 51-110.
12.
Kane MJ, Hambrick DZ, Conway AR: Working memory capacity and fluid intelligence are strongly related constructs: comment on Ackerman, Beier, and Boyle (2005). Psychol Bull 2005;131:66-71; author reply 72-65.
13.
Allaire JC, Marsiske M: Everyday cognition: age and intellectual ability correlates. Psychology Aging 1999;14:627-644.
14.
Diehl M, Willis SL, Schaie KW: Everyday problem solving in older adults: observational assessment and cognitive correlates. Psychology Aging 1995;10:478-491.
15.
Gross AL, Rebok GW, Unverzagt FW, Willis SL, Brandt J: Cognitive predictors of everyday functioning in older adults: results from the active cognitive intervention trial. J Gerontol B Psychol Sci Soc Sci 2011;66:557-566.
16.
Marsiske M, Margrett JA: Everyday problem solving and decision making; in Birren JE, Schaie KW, Abeles RP, Gatz M, Salthouse TA (eds): Handbook of the Psychology of Aging. Amsterdam, Elsevier, 2006, pp 315-342.
17.
Park DC, Hertzog C, Leventhal H, Morrell RW, Leventhal E, Birchmore D, Martin M, Bennett J: Medication adherence in rheumatoid arthritis patients: older is wiser. J Am Geriatr Soc 1999;47:172-183.
18.
Willis SL, Tennstedt SL, Marsiske M, Ball K, Elias J, Koepke KM, Morris JN, Rebok GW, Unverzagt FW, Stoddard AM, Wright E, Group AS: Long-term effects of cognitive training on everyday functional outcomes in older adults. JAMA 2006;296:2805-2814.
19.
Kirasic KC, Allen GL, Dobson SH, Binder KS: Aging, cognitive resources, and declarative learning. Psychology Aging 1996;11:658-670.
20.
Burton CL, Strauss E, Hultsch DF, Hunter MA: Cognitive functioning and everyday problem solving in older adults. Clin Neuropsychol 2006;20:432-452.
21.
Rebok GW, Ball K, Guey LT, Jones RN, Kim HY, King JW, Marsiske M, Morris JN, Tennstedt SL, Unverzagt FW, Willis SL; ACTIVE Study Group: Ten-year effects of the advanced cognitive training for independent and vital elderly cognitive training trial on cognition and everyday functioning in older adults. J Am Geriatr Soc 2014;62:16-24.
22.
Cornelius SW, Caspi A: Everyday problem solving in adulthood and old age. Psychol Aging 1987;2:144-153.
23.
Thornton WL, Deria S, Gelb S, Shapiro RJ, Hill A: Neuropsychological mediators of the links among age, chronic illness, and everyday problem solving. Psychol Aging 2007;22:470-481.
24.
Park DC: Psychological Issues Related to Competence: Cognitive Aging and Instrumental Activities of Daily Living; Social Structures and Aging. Mahwah, Lawrence Erlbaum Associates, 1997, pp 66-82.
25.
Baltes PB, Staudinger UM, Lindenberger U: Lifespan psychology: theory and application to intellectual functioning. Annu Rev Psychol 1999;50:471-507.
26.
Hedden T, Lautenschlager G, Park DC: Contributions of processing ability and knowledge to verbal memory tasks across the adult life-span. Q J Exp Psychol A 2005;58:169-190.
27.
Willis SL, Marsiske M: Manual for the Everyday Problems Test. University Park, Pennsylvania State University, 1993, pp 1-31.
28.
Salthouse TA, Babcock RL: Decomposing adult age differences in working memory. Dev Psychol 1991;27:14.
29.
Wechsler D: WAIS-III, Wechsler Adult Intelligence Scale: Administration and Scoring Manual. San Antonio, The Psychological Corporation, 1997.
30.
Casaletto KB, Umlauf A, Beaumont J, Gershon R, Slotkin J, Akshoomoff N, Heaton RK: Demographically corrected normative standards for the English version of the NIH toolbox cognition battery. J Int Neuropsychol Soc 2015;21:378-391.
31.
Robbins TW, James M, Owen AM, Sahakian BJ, McInnes L, Rabbitt P: Cambridge Neuropsychological Test Automated Battery (CANTAB): a factor analytic study of a large sample of normal elderly volunteers. Dementia 1994;5:266-281.
32.
Ekstrom RB, French JW, Harman HH, Dermen D: Manual for Kit of Factor Referenced Cognitive Tests. Princeton, Educational Testing Service 1976.
33.
Raven J, Raven JC, Court JH: Manual for Raven's Progressive Matrices and Vocabulary Scale. San Antonio, The Psychological Corporation, 1998.
34.
Schmitter-Edgecombe M, Parsey C, Cook DJ: Cognitive correlates of functional performance in older adults: comparison of self-report, direct observation, and performance-based measures. J Int Neuropsychol Soc 2011;17:853-864.
35.
Hertzog C: Influences of cognitive slowing on age differences in intelligence. Dev Psychol 1989;25:16.
36.
Lubinski D, Humphreys LG: Assessing spurious “moderator effects”: illustrated substantively with the hypothesized (“synergistic”) relation between spatial and mathematical ability. Psychol Bull 1990;107:385-393.
37.
Cumming G: Inference by eye: reading the overlap of independent confidence intervals. Stat Med 2009;28:205-220.
38.
Grossmann I, Na J, Varnum ME, Park DC, Kitayama S, Nisbett RE: Reasoning about social conflicts improves into old age. Proc Natl Acad Sci USA 2010;107:7246-7250.
39.
Mata R, Schooler LJ, Rieskamp J: The aging decision maker: cognitive aging and the adaptive selection of decision strategies. Psychology Aging 2007;22:796-810.
40.
Allaire JC, Marsiske M: Well- and ill-defined measures of everyday cognition: relationship to older adults' intellectual ability and functional status. Psychol Aging 2002;17:101-115.
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