Sophie Lohmann

Max Planck Institute for Demographic Research · Digital and Computational Demography

At the onset of the first wave of COVID‐19 in the United States, the pandemic's effect on future birthrates was unknown. In this paper, we assess whether digital trace data—often touted as a panacea for traditional data scarcity—held the potential to accurately predict fertility change caused by the COVID‐19 pandemic in the United States. Specifica...

One of the strongest empirical regularities in spatial demography is that flows of migrants are positively associated with population stocks at origin and destination and are inversely related to distance. This pattern was formalized into what are known as gravity models of migration. Traditionally, distance is measured geographically, but other me...

Many people engage with a diverse array of social media platforms, raising concerns that this diversity of platforms may be linked to negative affect, hypothesized to arise from multitasking or identify diffusion. Using a large representative sample (N = 1,372) of US adults from the authoritative General Social Survey, we examine associations betwe...

COVID-19 poses disproportionate mental health consequences to the public during different phases of the pandemic. We use a computational approach to capture the specific aspects that trigger the public's anxiety about the pandemic and investigate how these aspects change over time. First, we identified nine subjects of anxiety (SOAs) in a sample of...

COVID-19 poses disproportionate mental health consequences to the public during different phases of the pandemic. We use a computational approach to capture the specific aspects that trigger an online community's anxiety about the pandemic and investigate how these aspects change over time. First, we identified nine subjects of anxiety (SOAs) in a...

Objectives: To understand whether health insurance coverage of vaccine costs and discussing vaccination with a healthcare provider are necessary for trust in CDC (Centers for Disease Control) to increase the uptake of the vaccine. Method: A nationally representative sample of 2,549 adults from the United States answered questions about trust in...

Digital and computational demography explores demography in relation to the digital revolution – the rapid technological improvements in digitized information storage, computational power and the spread of the internet and mobile technologies since the turn of the new millennium. We cover three ways in which the digital revolution touches upon demo...

Migration has been proposed as one of the factors that shape cultural similarities across countries. However, studying the relationship between culture and migration has been challenging, in part because culture is difficult to quantify. The traditionally used survey questionnaires have a number of drawbacks, including that they are costly and diff...

We conducted a preregistered, multi-laboratory project (k = 36; N = 3531) to assess the size and robustness of ego depletion effects using a novel replication method, termed the paradigmatic replication approach. Laboratories implemented one of two procedures that intended to manipulate self-control and tested performance on a subsequent measure of...

We conducted a preregistered multi-laboratory project (k = 36; N = 3531) to assess the size and robustness of ego depletion effects using a novel replication method, termed the paradigmatic replication approach. Laboratories implemented one of two procedures that intended to manipulate self control and tested performance on a subsequent measure of...

We use data from Google Trends to predict the effect of the COVID-19 pandemic on future births in the United States. First, we show that periods of above-normal search volume for Google keywords relating to conception and pregnancy in US states are associated with higher numbers of births in the following months. Excess searches for unemployment ke...

Social media have become a near-ubiquitous part of our lives. The growing concern that their use may alter our well-being has been met with elusive scientific evidence. Existing literature often simplifies social media use as a homogeneous process. In reality, social media use and functions vary widely depending on platform and demographic characte...

Simple, self-posed questions may modulate behavioral repetition of choices in situations that are neither fully habitual nor fully intentional. In six experiments, participants were trained to repeatedly choose their preferred door out of an array of three doors. Questions generally increased speed in the upcoming task, supporting past findings tha...

Objectives: Social media messages have been increasingly used in health campaigns about prevention, testing, and treatment of HIV. We identified factors leading to the retransmission of messages from expert social media accounts to create data-driven recommendations for online HIV messaging. Design and methods: We sampled 20,201 HIV-related twee...

The present study evaluated the potential use of Twitter data for providing risk indices of STIs. We developed Online Risk Indices (ORIs) based on tweets to predict new HIV, gonorrhea, and chlamydia diagnoses, across U.S. counties and across five years. We analyzed over one hundred million tweets from 2009 to 2013 using open-vocabulary techniques a...

This research aimed to determine the nature of social media discussions about HIV. With the goal of conducting a descriptive analysis, we collected almost 1,000 tweets posted February to September 2015. The sample of tweets included keywords related to HIV or behavioral risk factors (e.g., sex, drug use) and was coded for content (e.g., HIV), behav...