Age
The Surprising Power of Age-Dependent Taxes
Matthew Weinzierl
Review of Economic Studies, October 2011, Pages 1490-1518
Abstract:
This paper provides a new, empirically driven application of the dynamic Mirrleesian framework by studying a feasible and potentially powerful tax reform: age-dependent labour income taxation. I show analytically how age dependence improves policy on both the intratemporal and intertemporal margins. I use detailed numerical simulations, calibrated with data from the U.S. Panel Study of Income Dynamics, to generate robust policy implications: age dependence (1) lowers marginal taxes on average and especially on high-income young workers and (2) lowers average taxes on all young workers relative to older workers when private saving and borrowing are restricted. Finally, I calculate and characterize the welfare gains from age dependence. Despite its simplicity, age dependence generates a welfare gain equal to between 0.6% and 1.5% of aggregate annual consumption, and it captures more than 60% of the gain from reform to the dynamic optimal policy. The gains are due to substantial increases in both efficiency and equity. When age dependence is restricted to be Pareto improving, the welfare gain is nearly as large.
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Do Stronger Age Discrimination Laws Make Social Security Reforms More Effective?
David Neumark & Joanne Song
NBER Working Paper, September 2011
Abstract:
Supply-side Social Security reforms to increase employment and delay benefit claiming among older individuals may be frustrated by age discrimination. We test for policy complementarities between supply-side Social Security reforms and demand-side efforts to deter age discrimination, specifically studying whether stronger state-level age discrimination protections enhanced the impact of the increases in the Social Security Full Retirement Age (FRA) that occurred in the past decade. The evidence indicates that, for older individuals who were "caught" by the increase in the FRA, benefit claiming reductions and employment increases were sharper in states with stronger age discrimination protections.
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Still young at heart: Negative age-related information motivates distancing from same-aged people
David Weiss & Alexandra Freund
Psychology and Aging, forthcoming
Abstract:
Research on subjective age has shown that most older adults feel significantly younger than their chronological age. One of the proposed mechanisms for this subjective age effect is that distancing oneself from an age group that is associated with decline in functioning helps older adults maintain a positive view of themselves. Providing negative age-related information, then, should lead older adults to direct their attention away from stimuli that remind them of their age and to distance themselves from same-aged people. In 2 experiments (N1 = 78, 65-83 years of age, M = 71.67, SD = 4.81; N2 = 98, 65-87 years of age, M = 70.52, SD = 4.89), older adults were confronted with positive, neutral, or negative age-related information. The salience of age increased after receiving negative age-related information. Furthermore, older adults directed their gaze away from pictures of older adults and looked longer at middle-aged adults after being confronted with negative age-related information. In addition, Study 2 showed that negative age-related information led older adults to distance themselves from same-aged people. Moreover, they perceived themselves as being more similar to middle-aged than to older adults. These findings highlight the motivational processes that might contribute to the discrepancy between chronological and subjective age in older adults and the psychological function of this discrepancy. Feeling younger might allow older adults to maintain a positive view of themselves despite age-related losses.
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Are you too young for the Nobel Prize?
John Baffes & Athanasios Vamvakidis
Research Policy, forthcoming
Abstract:
Although age is not supposed to be a criterion for the award of the Nobel Prize, it is commonly believed that it does play a role. Indeed, econometric evidence in this paper also suggests such a role. However, the paper finds that, if there is a preference for older Nobel candidates, this is introduced during the nomination process. The paper actually finds that the Nobel Committee does not favor older nominees and that, if anything, it seems to partially offset the age premium introduced by the nominators.
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Age differences in women's tendency to gossip are mediated by their mate value
Karlijn Massar, Abraham Buunk & Sanna Rempt
Personality and Individual Differences, January 2012, Pages 106-109
Abstract:
In the current study it was investigated whether age differences in women's tendency to gossip exist, and whether these could be accounted for by self-reported mate value. It was expected that younger women would report a higher tendency to gossip after reading a scenario in which a romantic rival was introduced, because they are at an age when competition for mates is salient and often intense. Moreover, it was hypothesized that this higher tendency to gossip would be attributable to these women's higher mate value, since younger women have a higher reproductive capacity than older women. The results confirm these expectations: age differences in women's tendency to gossip disappeared when controlling for mate value. Discussion focuses on the interpretation and implications of these results.
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Let me guess how old you are: Effects of age, gender, and facial expression on perceptions of age
Manuel Voelkle et al.
Psychology and Aging, forthcoming
Abstract:
Perceptions of age influence how we evaluate, approach, and interact with other people. Based on a paramorphic human judgment model, the present study investigates possible determinants of accuracy and bias in age estimation across the adult life span. For this purpose, 154 young, middle-aged, and older participants of both genders estimated the age of 171 faces of young, middle-aged, and older men and women, portrayed on a total of 2,052 photographs. Each face displayed either an angry, fearful, disgusted, happy, sad, or neutral expression (FACES database; Ebner, Riediger, & Lindenberger, 2010). We found that age estimation ability decreased with age. Older and young adults, however, were more accurate and less biased in estimating the age of members of their own as compared with those of the other age group. In contrast, no reliable own-gender advantage was observed. Generally, the age of older faces was more difficult to estimate than the age of younger faces. Furthermore, facial expressions had a substantial impact on accuracy and bias of age estimation. Relative to other facial expressions, the age of neutral faces was estimated most accurately, while the age of faces displaying happy expressions was most likely underestimated. Results are discussed in terms of methodological and practical implications for research on age estimation.
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With Age Comes Wisdom: Decision Making in Younger and Older Adults
Darrell Worthy et al.
Psychological Science, forthcoming
Abstract:
In two experiments, younger and older adults performed decision-making tasks in which reward values available were either independent of or dependent on the previous sequence of choices made. The choice-independent task involved learning and exploiting the options that gave the highest rewards on each trial. In this task, the stability of the expected reward for each option was not influenced by the previous choices participants made. The choice-dependent task involved learning how each choice influenced future rewards for two options and making the best decisions based on that knowledge. Younger adults performed better when rewards were independent of choice, whereas older adults performed better when rewards were dependent on choice. These findings suggest a fundamental difference in the way in which younger adults and older adults approach decision-making situations. We discuss the results in the context of prominent decision-making theories and offer possible explanations based on neurobiological and behavioral changes associated with aging.
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Learning to ignore distracters
Ellen Rozek, Susan Kemper & Joan McDowd
Psychology and Aging, forthcoming
Abstract:
Eye tracking has indicated that older and young adults process distracters similarly when reading single sentences. The present study extended this approach by presenting short paragraphs, sentence by sentence. Eye tracking measures included reading times per word, and the duration of the first fixation and total fixations to the distracters and target words. Comprehension was tested following each paragraph, and recognition of distracters and target words was assessed. The results indicated that young adults were able to learn to ignore the distracters as they read through the paragraphs, whereas older adults were less successful at learning to ignore the distracters.
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Leadership in elephants: The adaptive value of age
Karen McComb et al.
Proceedings of the Royal Society: Biological Sciences, 7 November 2011, Pages 3270-3276
Abstract:
The value of age is well recognized in human societies, where older individuals often emerge as leaders in tasks requiring specialized knowledge, but what part do such individuals play in other social species? Despite growing interest in how effective leadership might be achieved in animal social systems, the specific role that older leaders may play in decision-making has rarely been experimentally investigated. Here, we use a novel playback paradigm to demonstrate that in African elephants (Loxodonta africana), age affects the ability of matriarchs to make ecologically relevant decisions in a domain critical to survival-the assessment of predatory threat. While groups consistently adjust their defensive behaviour to the greater threat of three roaring lions versus one, families with younger matriarchs typically under-react to roars from male lions despite the severe danger they represent. Sensitivity to this key threat increases with matriarch age and is greatest for the oldest matriarchs, who are likely to have accumulated the most experience. Our study provides the first empirical evidence that individuals within a social group may derive significant benefits from the influence of an older leader because of their enhanced ability to make crucial decisions about predatory threat, generating important insights into selection for longevity in cognitively advanced social mammals.
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Changes in World Inequality in Length of Life: 1970-2000
Ryan Edwards
Population and Development Review, September 2011, Pages 499-528
Abstract:
Previous research has revealed much global convergence over the past several decades in life expectancy at birth and in infant mortality, which are closely linked. But trends in the variance of length of life, and in the variance of length of adult life in particular, are less well understood. I examine life-span inequality in a comprehensive panel of 180 countries observed in 1970 and 2000. Convergence in infant mortality has unambiguously reduced world inequality in total length of life starting from birth, but world inequality in length of adult life has remained largely unchanged. Underlying both of these observations is a growing share of total inequality attributable to between-country variation. Especially among developed countries, the absolute level of between-country inequality has risen over time. The sources of widening inequality in length of life between countries remain unclear, but signs point away from changes in income, leaving patterns of knowledge diffusion as a likely candidate.