"Dutton and Woodley of Menie have written a fascinating account of the causes and implications of intelligence trends for human civilisation, and stress that our own shows symptoms of decline. The range of their learning and the clarity of their style will delight the reader."

Edward Dutton is a researcher based in Oulu in northern Finland. Born in London in 1980, Dutton read Theology at Durham University before completing a PhD in Religious Studies at Aberdeen University in 2006. This was developed into his first book: Meeting Jesus at University: Rites of Passage and Student Evangelicals (2008). He was made 'Docent' (Adjunct Reader) of the Anthropology of Religion and Finnish Culture at Oulu University in 2011. In 2012, however, Dutton made the move to evolutionary psychology. Since then, Dutton has published in leading psychology journals including Intelligence, and Personality and Individual Differences. He has been a guest researcher in the Psychology Department at Umeå University in Sweden and is academic consultant to a research group in the Special Education Department at King Saud University in Riyadh. In 2020, he was appointed Professor of Evolutionary Psychology at Asbiro University, a business-focused university of applied sciences in Łódź, Poland. Dutton's research has been reported worldwide. He runs a popular internet channel, The Jolly Heretic, in which he explores daring scientific research. Dutton is the author of many books, most recently, Witches, Feminism, and the Fall of the West (2021), Islam: An Evolutionary Perspective (2020) and Churchill’s Headmaster: The 'Sadist’ Who Nearly Saved the British Empire (2019).

Michael A. Woodley of Menie, Yr. took his Bachelor's degree at Columbia University, New York, majoring in Evolution, Ecology and Environmental Biology. His PhD work concerned the molecular characterization of aspects of the life history ecology of the thale cress Arabidopsis thaliana, and was undertaken at the University of London (Royal Holloway). Shortly after completing this work, Michael switched his focus from plant to human evolutionary and behavioural ecology and has conducted much of the research showing that average general intelligence is in decline, to the extent that this has even become known as the 'Woodley Effect’ in academic circles. He has co-written the academic monograph Historical Variability in Heritable General Intelligence (Buckingham University Press, 2013). Michael has publically discussed this research in various media, including national and international newspapers (The Times, The Telegraph, Huffington Post, The Daily Mail, etc.), and also in various radio, television and internet formats (e.g. BBC Radio, Al-Jazeera, The Stefan Molyneux Show etc.).