What Makes a Critic Tick? Connected Authors and the Determinants of Book Reviews
The professional critic has long been heralded as the gold standard for evaluating products and services such as books, movies, and restaurants. Analyzing hundreds of book reviews from 40 different newspapers and magazines, Professor Michael Luca and coauthors Loretti Dobrescu and Alberto Motta investigate the determinants of professional reviews and then compare these to consumer reviews from Amazon.com. Key concepts include:
•The data suggest that media outlets do not simply seek to isolate high-quality books, but also to find books that are a good fit for their readers. This is a potential advantage for professional critics, one that cannot be easily replicated by consumer reviews.
•Expert ratings are correlated with Amazon ratings, suggesting that experts and consumers tend to agree in aggregate about the quality of a book. However, there are systematic differences between these sets of reviews.
•Relative to consumer reviews, professional critics are less favorable to first-time authors. This suggests that one potential advantage of consumer reviews is that they are quicker to identify new and unknown books.
•Relative to consumer reviews, professional critics are more favorable to authors who have garnered other attention in the press (as measured by number of media mentions outside of the review) and who have won book prizes.