The Concept of Anxiety
All of Kierkegaard's books have either a preface, dedication, or prayer at the beginning. This book includes a lengthy introduction. "The Concept of Anxiety" was published on exactly the same date as "Prefaces", June 17, 1844. Both books deal with Hegel’s idea of mediation. Mediation is a common thread throughout Kierkegaard’s works. His work up to this point was to show that faith was being mediated by knowledge. Here he takes up the questions of sin and guilt.
Cognitive science of religion
While Dan Sperber foreshadowed cognitive science of religion in his 1975 book "Rethinking Symbolism", the earliest research to fall within the scope of the discipline was published during the 1980s. Among this work, Stewart E. Guthrie's "A cognitive theory of religion" was significant for examining the significance of anthropomorphism within religion, work that ultimately led to the development of the concept of the hyperactive agency detection device – a key concept within cognitive science of religion.