S0034 · cohen_philip_afqt_income · registry identity

AFQT Verbal Scores and Civilian Income

Cohen · 2016

study independent10 occurrences across 3 books · load 30

External resolution

Resolution status: ambiguous

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Canonical propositions this source was matched as evidence for.

P05 — Learning is cumulative: what a student can learn next is constrained by what they already know, so early differences in knowledge compoun…

P06 — Vocabulary size is the best visible proxy for a person's accumulated general knowledge, and it is built slowly by accretion over many yea…

How Hirsch uses it

Every occurrence, grouped by book and chapter, with the claim it was linked to support and (where the extraction regenerated one) the underlying warrant.

2022 · American Ethnicity

Study by Philip Cohen showing teenage Armed Forces Qualification Test (AFQT) scores linearly predict adult income levels.

direct There is a linear relationship between higher teenage literacy scores and higher adult income.

ch preface · empirical_study · ae:chpreface_E7

Warrant (implicit): Early academic performance on aptitude tests is the primary determinant of a person's future economic productivity and earning potential.

could fail ifThe correlation could be driven by the fact that families with high socio-economic status provide both the resources to score well on tests and the social networks necessary to secure high-income jobs.

The Cohen curve confirms the relation between teenage verbal tests and adult income.

direct Teen-age reading scores predict adult income because wider knowledge and effective vocabulary allow for more effective communication and learning.

ch 1 · statistical_data · ae:ch1_E8

Warrant (implicit): Standardized verbal test scores in adolescence are a reliable proxy for the total breadth of an individual's functional knowledge and communicative competence in adulthood.

could fail ifThe correlation may be driven by a third variable, such as socioeconomic status or inherited IQ, rather than the knowledge measured by the reading test itself.

The Cohen curve plotting teenage reading comprehension (AFQT scores) against adult household income at age 27-31.

direct Grades K-8 are the primary years when an individual's financial life chances are determined.

ch 5 · statistical_data · ae:ch5_E1

Warrant (implicit): A strong correlation between adolescent cognitive test scores and later household income indicates that the specific educational window during which those scores develop is the primary period of economic destiny.

could fail ifThe AFQT may capture inherited social capital or stable personality traits like conscientiousness that independently influence both reading scores and adult income.

Professor Cohen's finding that reading tests are predictors of future income.

direct Reading tests serve as income prediction tests.

ch 9 · expert_testimony · ae:ch9_E22

Warrant (implicit): Standardized measures of a foundational skill like reading serve as a reliable proxy for the cognitive and social capital required to achieve higher socioeconomic status.

could fail ifThe correlation between reading scores and income may be confounded by family wealth and zip code, which provide both higher test scores and better career networking independently of reading ability.

Statistical correlation between teen reading scores and adult income levels.

direct A young teenager's score on a reading test is a predictor of their level of income in later life.

ch appendix · statistical_data · ae:chappendix_E11

Warrant (implicit): Adolescent literacy proficiency is the dominant determining factor in an individual's future economic earning capacity.

could fail ifSocioeconomic status of the parents is a likely confounder that independently influences both the child's reading resources and their eventual access to high-paying jobs.

2023 · Shared Knowledge

Reference to Philip Cohen's research linking shared-knowledge curricula to increased earning power.

direct A shared-knowledge curriculum increases the future earning power of students.

ch 2 · empirical_study · sk:ch2_E5

Warrant (implicit): Acquiring a specific body of shared cultural knowledge in school provides the cognitive and social capital necessary to secure higher-paying employment in adulthood.

could fail ifThe correlation between shared knowledge and income may be confounded by the fact that both are products of a student's high initial socioeconomic status.

Sociological study by Philip Cohen showing the correlation between teenage reading scores and adult income.

direct Teenage reading scores predict adult incomes.

ch 2 · statistical_data · sk:ch2_E6

Warrant (implicit): Standardized reading assessments in adolescence accurately measure the long-term cognitive capabilities that the labor market rewards with higher compensation.

could fail ifReading scores may simply be a proxy for general intelligence (g-factor) or family background, which are the actual drivers of lifelong income.

Philip Cohen's research linking language competence in American English to adult income levels.

direct A reduction in a student's competence in standard American English results in a reduction of their future adult income.

ch 5 · empirical_study · sk:ch5_E5

Warrant (implicit): Economic rewards in a modern society are distributed primarily based on the mastery of the dominant national print language rather than other forms of human capital or social networking.

could fail ifOmitted variable bias, where factors like socioeconomic status of the parents drive both language competence and later adult income independently.

2024 · The Ratchet Effect

Philip Cohen's research showing a correlation between teenage AFQT verbal scores and later civilian income level.

direct A person's teenage score on the Armed Forces Qualification Test (AFQT) consistently predicts their income level in later civilian life.

ch 6 · empirical_study · re:ch6_E3

Warrant (implicit): Standardized measures of adolescent verbal ability capture the specific human capital or cultural literacy that determines long-term socioeconomic mobility in a modern economy.

could fail ifThe correlation may be driven by 'omitted variable bias,' such as parental socioeconomic status, which influences both teenage test scores and adult income independently.

Philip Cohen's research demonstrating that AFQT reading scores predict adult income regardless of home background.

direct An adolescent's level of nationally shared background knowledge predicts their future income level.

ch appendix-iv · empirical_study · re:chappendix-iv_E7

Warrant (implicit): The predictive power of standardized test scores on future earnings is a direct measure of the economic value of the cultural background knowledge those tests contain.

could fail ifThe AFQT may be a proxy for general cognitive ability (g-factor) or years of schooling rather than specifically measuring 'nationally shared background knowledge.'

Raw source_reference strings seen

As they appeared before normalization/consolidation into this source identity.

Philip Cohen (via Hirsch)
Philip Cohen, University of Maryland
Professor Philip Cohen, University of Maryland