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  • 2022
  • Working Paper

The Evolution of ESG Reports and the Role of Voluntary Standards
By: Ethan Rouen, Kunal Sachdeva and Aaron Yoon
We examine the evolution of ESG reports of S&P 500 firms from 2010 to 2021. The percentage of firms releasing these voluntary disclosures increased from 35% to 86% during this period, although the length of these documents experienced more modest growth. Using a...  View Details
Keywords: Voluntary Disclosure; Textual Analysis; Modeling And Analysis; Corporate Social Responsibility and Impact; AI and Machine Learning; Accounting
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  • 2021
  • Working Paper

The Diffusion of Disruptive Technologies
By: Aakash Kalyani, Nicholas Bloom, Tarek A. Hassan, Josh Lerner, Marcela Carvalho Ferreira de Mello and Ahmed Tahoun
We identify novel technologies using textual analysis of patents, job postings, and earnings calls. Our approach enables us to identify and document the diffusion of 29 disruptive technologies across firms and labor markets in the U.S. Five stylized facts emerge from...  View Details
Keywords: Technology; Geography; Innovation; R＆D; Information Technology; Disruptive Innovation; Geographic Location; Employment; Innovation and Invention; Research and Development
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  • Article

Machine Learning Approaches to Facial and Text Analysis: Discovering CEO Oral Communication Styles
By: Prithwiraj Choudhury, Dan Wang, Natalie A. Carlson and Tarun Khanna
We demonstrate how a novel synthesis of three methods—(1) unsupervised topic modeling of text data to generate new measures of textual variance, (2) sentiment analysis of text data, and (3) supervised ML coding of facial images with a cutting-edge convolutional neural...  View Details
Keywords: CEOs; Communication Style; Machine Learning; Spoken Communication; Nonverbal Communication; Personal Characteristics; Analysis; Performance
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  • Article

Creating Firm Disclosures
By: Amir Amel-Zadeh, Alexandra Scherf and Eugene F. Soltes
Managers expend significant time and effort preparing disclosures about firm performance and strategy. Although prior literature has explored how variation in the style and presentation of disclosures impacts investors' perceptions of firms, little is known about how...  View Details
Keywords: Disclosure; Earnings Conference Call; Field Study; MD＆A; Textual Analysis; Corporate Disclosure
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  • 2019
  • Working Paper

Machine Learning Approaches to Facial and Text Analysis: Discovering CEO Oral Communication Styles
By: Prithwiraj Choudhury, Dan Wang, Natalie A. Carlson and Tarun Khanna
We demonstrate how a novel synthesis of three methods—(1) unsupervised topic modeling of text data to generate new measures of textual variance, (2) sentiment analysis of text data, and (3) supervised ML coding of facial images with a cutting-edge convolutional neural...  View Details
Keywords: Spoken Communication; Business History; Analytics and Data Science; Finance; Performance
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