Results 21 to 30 of about 18,306,499 (332)
Individual differences in the perception of similarity and difference [PDF]
, 2008 Thematically related concepts like coffee and milk are judged to be more similar than thematically unrelated concepts like coffee and lemonade. We investigated whether thematic relations exert a small effect that occurs consistently across participants ...
Estes, Zachary, Simmons, Sabrina
core +4 more sources
Design-Based Analysis in Difference-in-Differences Settings with Staggered Adoption [PDF]
Journal of Econometrics, 2018 In this paper we study estimation of and inference for average treatment effects in a setting with panel data. We focus on the setting where units, e.g., individuals, firms, or states, adopt the policy or treatment of interest at a particular point in ...
S. Athey, G. Imbens
semanticscholar +1 more source
Frontiers in Public Health, 2022 The availability and affordability of medicines remain major health challenges around the world. In March 2019, the Chinese government introduced a pilot National Centralized Drug Procurement (NCDP) program in order to reduce drug prices and improve the ...
Yuanjin Zhang +9 more
semanticscholar +1 more source
Explicit incentives increase citizen science recordings
Conservation Letters, 2023 From tracking land‐use change to biodiversity loss, citizen science data have become a cornerstone for conservation. However, policymakers must understand the “data‐generating process” to make good use of existing citizen science data and encourage the ...
Florian Diekert +3 more
doaj +1 more source
Does the IFRS 16 affect the key ratios of listed companies? Evidence from Poland
International Journal of Management and Economics, 2022 The paper aims to assess the International Financial Reporting Standard (IFRS) 16 “Leases” impact on the lessees’ financial situation. The study was conducted on the financial data for 2018–2019 of 494 companies listed on the Warsaw Stock Exchange using ...
Białek-Jaworska Anna +2 more
doaj +1 more source
Limitations of difference-in-difference for measuring convergence
Laboratory Phonology, 2019 Linguistic convergence is the phenomenon in which interlocutors’ speech characteristics become more similar to each other’s. One of the methods frequently used to measure convergence is the difference-in-difference (DID) approach, comparing change in ...
Chelsea Sanker, Uriel Cohen Priva
doaj +2 more sources
Explaining persistence in online courses in higher education: a difference-in-differences analysis
International Journal of Educational Technology in Higher Education, 2021 The aim of this study was to verify if the UTAUT model, enriched with anxiety and factors relating to students characteristics and to the specificities of online courses, influences persistence in online courses.
Sawsen Lakhal +2 more
semanticscholar +1 more source
Difference-in-Differences with Variation in Treatment Timing
Journal of Econometrics, 2018 The canonical difference-in-differences (DD) estimator contains two time periods, ”pre” and ”post”, and two groups, ”treatment” and ”control”. Most DD applications, however, exploit variation across groups of units that receive treatment at different ...
Andrew Goodman-Bacon
semanticscholar +1 more source
Synthetic Difference-in-Differences Estimation
SSRN Electronic Journal, 2023 Corrected typos Corrected ...
Clarke, Damian +3 more
openaire +3 more sources
Using Difference-in-Differences to Identify Causal Effects of COVID-19 Policies
Social Science Research Network, 2020 Policymakers have implemented a wide range of non-pharmaceutical interventions to fight the spread of COVID-19. Variation in policies across jurisdictions and over time strongly suggests a difference-in-differences (DD) research design to estimate causal
Andrew Goodman-Bacon, Jan Marcus
semanticscholar +1 more source