Jesper N. Wulff

alphaN

Mon, 01 Jan 0001 00:00:00 +0000

alphaN implements the Bayesian–frequentist compromise from Wulff & Taylor (2024): it returns a sample-size-dependent significance threshold derived from Bayes factors, so that the alpha level shrinks as the sample grows. An interactive web app built on the same method lets users explore thresholds without writing code.

install.packages("alphaN")
library(alphaN)
alphaN(n = 500)

biokNN

Mon, 01 Jan 0001 00:00:00 +0000

biokNN provides a bi-objective k-nearest-neighbours imputation method for multilevel data, balancing global structure and cluster-level structure when filling in missing values. It accompanies Cubillos, Wøhlk & Wulff (2022).

install.packages("biokNN")

bootmakr

Mon, 01 Jan 0001 00:00:00 +0000

bootmakr adds bootstrap inference to sensemakr-style sensitivity analysis, so that sensitivity statistics come with resampling-based uncertainty rather than point estimates alone. A companion Stata implementation is available as bootmakr for Stata.

# install.packages("remotes")
remotes::install_github("jespernwulff/bootmakr")

bootmakr for Stata

Mon, 01 Jan 0001 00:00:00 +0000

The Stata implementation of bootmakr: bootstrap inference for sensemakr sensitivity analysis, with support for clustered bootstrap, benchmark covariates, multiple kd values, and plots.

net install bootmakr, from("https://raw.githubusercontent.com/jespernwulff/bootmakr-stata/main/")

ginteff

Mon, 01 Jan 0001 00:00:00 +0000

ginteff is an R port of the Stata ginteff command by Marius Radean (The Stata Journal, 2023). It computes two- and three-way interaction effects — via partial derivatives or first differences — for fitted regression models, with delta-method standard errors.

Built as a thin wrapper around marginaleffects, it supports arbitrary variance–covariance specifications ("HC3", clustered, or a user-supplied sandwich matrix), which propagate through to the final interaction-effect standard errors.

# install.packages("remotes")
remotes::install_github("jespernwulff/ginteff")

Comparing Apples With Apples: The Performance of State and Privately Owned Chinese Football Clubs

Tue, 30 Jun 2026 00:00:00 +0200

Binary Regression Models: An Average Partial Effects Approach

Mon, 01 Jun 2026 00:00:00 +0200

Blaming the Thermometer for the Fever: Separating Misapplication from Method in Null Hypothesis Significance Testing

Mon, 01 Jun 2026 00:00:00 +0200

Diagnostics Without Microdata: Assessing Credibility of Event Studies and Difference-in-Differences Estimates After Publication

Mon, 01 Jun 2026 00:00:00 +0200

From Pixels to Signals: Hierarchical Vision Transformers for Return Prediction

Mon, 01 Jun 2026 00:00:00 +0200

Why You Should Not Use the ITCV With Robust Standard Errors (and What to Do Instead)

Mon, 01 Jun 2026 00:00:00 +0200

Investigating the Analytical Robustness of the Social and Behavioural Sciences

Thu, 02 Apr 2026 00:00:00 +0200

Investigating the Replicability of the Social and Behavioral Sciences

Thu, 02 Apr 2026 00:00:00 +0200

Hic Sunt Dracones: On the Risks of Comparing the ITCV With Control Variable Correlations

Sun, 01 Feb 2026 00:00:00 +0100

Exploring the Relevance of Two-Part Models in Innovation Research: Towards a Better Understanding of Innovation Sales

Sat, 01 Feb 2025 00:00:00 +0100

Pioneering Automation in Agricultural Subsidy Processing Through Deep Learning for Computer Vision

Thu, 02 Jan 2025 00:00:00 +0100

How and Why Alpha Should Depend on Sample Size: A Bayesian-Frequentist Compromise for Significance Testing

Thu, 01 Aug 2024 00:00:00 +0200

CEO Personality Traits, Strategic Flexibility, and Firm Dynamics

Thu, 01 Feb 2024 00:00:00 +0100

Public and Private Differences in Employees' Values: A Cross-Country Investigation of Schwartz's Basic Human Values Theory

Thu, 02 Nov 2023 00:00:00 +0100

Common Methodological Mistakes

Wed, 01 Feb 2023 00:00:00 +0100

Multilevel Survival Analysis of Interactions Between Parental- and Neighbourhood-Level Socioeconomic Indices in Childhood and Later Risks of Self-Harm and Violent Criminality: A National Cohort Study

Wed, 01 Feb 2023 00:00:00 +0100

A Bi-Objective k-Nearest-Neighbors-Based Imputation Method for Multilevel Data

Sat, 01 Oct 2022 00:00:00 +0200

Watch Me Go Big: CEO Narcissism and Corporate Acquisitions

Fri, 22 Oct 2021 00:00:00 +0200

Prediction of Autism Risk From Family Medical History Data Using Machine Learning: A National Cohort Study From Denmark

Sun, 01 Aug 2021 00:00:00 +0200

Statistical Myths About Log-Transformed Dependent Variables and How to Better Estimate Exponential Models

Thu, 01 Jul 2021 00:00:00 +0200

A Multilevel Bayesian Framework for Predicting Municipal Waste Generation Rates

Sat, 01 May 2021 00:00:00 +0200

Are You 110% Sure? Modeling of Fractions and Proportions in Strategy and Management Research

Sat, 01 May 2021 00:00:00 +0200

Are Survey Experiments as Valid as Field Experiments in Management Research? An Empirical Comparison Using the Case of Ethnic Employment Discrimination

Sun, 01 Mar 2020 00:00:00 +0100

Keeping It Within Bounds: Regression Analysis of Proportions in International Business

Sun, 01 Mar 2020 00:00:00 +0100

Does Good Performance Reduce Bad Behavior? Antecedents of Ethnic Employment Discrimination in Public Organizations

Sun, 01 Sep 2019 00:00:00 +0200

Generalized Two-Part Fractional Regression With cmp

Sat, 01 Jun 2019 00:00:00 +0200

The Effect of Early-Life and Adult Socioeconomic Position on Development of Lifestyle-Related Diseases

Sat, 01 Jun 2019 00:00:00 +0200

The Effect of Acquisitions on Exploration and Exploitation in China

Thu, 09 May 2019 00:00:00 +0200

European Cross-Border Acquisitions: Long-Run Stock Returns and Firm Characteristics

Sat, 01 Dec 2018 00:00:00 +0100

Is the Public Sector a Fairer Employer? Ethnic Employment Discrimination in the Public and Private Sectors

Sat, 01 Dec 2018 00:00:00 +0100

Assessing the Relative Importance of Correlates of Loneliness in Later Life: Gaining Insight Using Recursive Partitioning

Fri, 02 Nov 2018 00:00:00 +0100

A Two-Pronged Approach? Combined Leadership Styles and Innovative Behavior

Mon, 10 Sep 2018 00:00:00 +0200

Antecedents of Ethnic Employment Discrimination in Public Organizations

Wed, 01 Aug 2018 00:00:00 +0200

Fractional Regression Models in Strategic Management Research

Wed, 01 Aug 2018 00:00:00 +0200

Multiple Imputation by Chained Equations in Praxis: Guidelines and Review

Sun, 01 Jan 2017 00:00:00 +0100

A Systematic Assessment of Empirical Research on Foreign Entry Mode

Mon, 09 May 2016 00:00:00 +0200

Interpreting Results From the Multinomial Logit Model: Demonstrated by Foreign Market Entry

Wed, 01 Apr 2015 00:00:00 +0200

Entry Mode and Performance of Nordic Firms: Firm-Specific Advantages and International Experience

Thu, 01 Jan 2015 00:00:00 +0100

Et billede siger mere end 1000 ord: Et eksempel på grafisk formidling og fortolkning af et multilevelstudie

Thu, 01 Jan 2015 00:00:00 +0100

Testing the OLI-Model: Is Entry Mode Choice Important for Non-Financial and Financial Performance?

Thu, 01 Jan 2015 00:00:00 +0100