Why a longitudinal study

The core proposition of The National Information Exchange Agency is that making contribution visible and economically legible produces measurable improvements in community economic health. This is a claim that can be tested, and The NIEA has committed publicly to testing it — including reporting results that do not flatter the hypothesis.

A longitudinal study is the appropriate instrument for this test because the effects of changed economic visibility are not instantaneous. They accumulate over time as verified contribution records build, as institutional behavior changes in response to richer data, and as individual contributors gain access to opportunities that were previously invisible to them. A cross-sectional snapshot cannot capture this trajectory. A longitudinal study that follows participants and communities over years can.

The NIEA Longitudinal Study is designed to generate evidence that is useful, interpretable, and honest — which means it is designed to detect null results and adverse findings, not only to confirm the hypothesis.

Research questions

The study is organized around three primary research questions:

  1. Does contribution legibility affect individual economic outcomes? Do individuals with verified contribution records access credit, employment, and opportunity at different rates than matched individuals without such records? Does the effect differ by demographic group, geography, or contribution type?
  2. Does contribution legibility affect community economic outcomes? Do communities operating Contribution Networks exhibit different trajectories in small business formation, wage growth, community investment, and economic resilience relative to comparable communities that do not?
  3. Does contribution legibility change institutional behavior? Do lenders, employers, and civic institutions that have access to contribution data make materially different decisions — and do those decisions produce better outcomes on independent measures of community wellbeing?

Each question is testable. Each requires data that the study is designed to collect. None of them has a predetermined answer.

Study design

The study uses a matched-cohort design. Participants who use The NIEA's Contribution Network infrastructure are matched at enrollment to comparable individuals and communities who do not, on dimensions including geography, industry, income level, and prior economic activity. Matching is done at enrollment and re-evaluated annually to account for drift.

Longitudinal tracking covers a minimum of five years from first verified contribution record, with follow-up data collection at twelve, twenty-four, thirty-six, forty-eight, and sixty months. Extended follow-up at ten years is planned for cohorts enrolled in the study's first phase.

Outcomes are measured on the following dimensions:

  • Individual economic outcomes: Credit access and terms, employment transitions, income trajectory, entrepreneurship and business formation, asset accumulation.
  • Individual social outcomes: Civic engagement, network diversity (measured through opt-in network reporting), and self-reported economic confidence and stability.
  • Community economic outcomes: Business formation and survival rates, commercial vacancy rates, median income growth, public and private investment flows.
  • Institutional behavior: Lending decisions, hiring decisions, and community investment decisions by institutions with access to The NIEA data relative to those without.

Data and privacy

Participation in the longitudinal study is opt-in and distinct from use of The NIEA's platform. Individuals who use NIEA services are not automatically enrolled in the study; they must affirmatively consent to longitudinal data collection and use.

Study data is held separately from platform data. The NIEA does not link study data to platform records without explicit participant consent for that linkage. Participants may withdraw from the study at any time, after which no new data is collected from or about them; previously collected data is handled according to the terms disclosed at enrollment.

Individual-level data is never published. Published findings are aggregated and, where applicable, statistically anonymized to prevent re-identification. Community-level findings are reported at geographic units large enough to prevent identification of specific individuals from aggregate patterns.

An independent data stewardship committee with community representation reviews data governance practices annually and has authority to halt data collection or require changes to the study protocol if practices diverge from stated commitments.

Publication and reporting

NIEA commits to the following publication standards:

  • Annual interim findings reports, covering data collected through the preceding twelve months, published on this website and distributed to study participants.
  • Pre-registration of primary hypotheses before data collection begins at each cohort. Registered hypotheses are not modified after data collection begins without public disclosure of the modification and its rationale.
  • Publication of null and adverse findings. If the study finds that contribution legibility does not improve outcomes, or that it worsens outcomes for particular populations, that finding will be published in the same channels and with the same prominence as confirming findings.
  • Submission of findings to peer-reviewed publication in economics, public policy, and community development journals. The study is designed to meet peer-review standards for empirical research.

The NIEA will not publish findings that have been internally selectively filtered to show only favorable results. Researchers who disagree with this commitment should not participate in the study.

Community participation

The Longitudinal Study is designed with, not only for, the communities it studies. Community advisory panels at each study site provide input on research questions, outcome measures, and interpretation of findings. Panel members are not NIEA employees and are not compensated by The NIEA; they are selected by a process involving community organizations independent of NIEA.

Study findings are shared with community advisory panels before external publication, and panels may provide written responses to findings that are published alongside them. The NIEA does not control or edit panel responses.

This is not a gesture toward community engagement. It is a recognition that the communities being studied are the appropriate interpreters of what the findings mean for them, and that findings interpreted without that context are routinely wrong.

Enrollment

The study is currently enrolling its initial cohorts in Dallas-Fort Worth, Texas, in conjunction with the Grapevine City Portal and affiliated community organizations. Enrollment in subsequent cohorts will be announced through The NIEA's public channels as additional city partnerships are established.

Questions about the study may be directed to us@theniea.com.