Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond

Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond

by Robert R. Provine

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Overview

Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond by Robert R. Provine

Robert Provine boldly goes where other scientists seldom tread-in search of hiccups, coughs, yawns, sneezes, and other lowly, undignified human behaviors. Upon investigation, these instinctive acts bear the imprint of our evolutionary origins and can be uniquely valuable tools for understanding how the human brain works and what makes us different from other species.

Many activities showcased in Curious Behavior are contagious, but none surpasses yawning in this regard-just reading the word can make one succumb. Though we often take it as a sign of sleepiness or boredom, yawning holds clues to the development of our sociality and ability to empathize with others. Its inescapable transmission reminds us that we are sometimes unaware, neurologically programmed beasts of the herd. Other neglected behaviors yield similar revelations. Tickling, we learn, may be the key to programming personhood into robots. Coughing comes in musical, medical, and social varieties. Farting and belching have import for the evolution of human speech. And prenatal behavior is offered as the strangest exhibit of all, defying postnatal logic in every way. Our earthiest acts define Homo sapiens as much as language, bipedalism, tool use, and other more studied characteristics.

As Provine guides us through peculiarities right under our noses, he beckons us to follow with self-experiments: tickling our own feet, keeping a log of when we laugh, and attempting to suppress yawns and sneezes. Such humble investigations provide fodder for grade school science projects as well as doctoral dissertations. Small Science can yield big rewards.

Product Details

ISBN-13: 9780674284135
Publisher: Harvard
Publication date: 05/12/2014
Pages: 288
Sales rank: 1,256,088
Product dimensions: 5.50(w) x 8.20(h) x 0.90(d)

About the Author

Robert R. Provine is Professor of Psychology and Neuroscience at the University of Maryland, Baltimore County.

Read an Excerpt

Chapter 5: Whites of the Eyes


“Don’t shoot until you see the whites of their eyes,” said General Israel Putnam to his American militia when facing British forces at Bunker Hill on June 17, 1775. This military anecdote is the best-known reference to the sclera, the eyeball’s tough, white outer coating. The sclera deserves better. Like the emotional tears of the previous chapter, it’s a uniquely human medium that transforms social signaling. The human sclera signals emotion, health, age, disease, and gaze direction, cues unavailable to our dark- eyed primate cousins. Our white sclera is also the reason why eyedrops that “get the red out” are really beauty aids.

Considering the sensory organ of the eye as an organ of communication requires some inferential leaps. I will prepare the way by sharing my own meandering path of discovery. In graduate school, I had the good fortune to collaborate on some research projects with Jay Enoch, then professor in the Department of Ophthalmology of the Washington University School of Medicine. Jay— a gentleman, visual scientist, whites of the eyes and clinician of the first rank— is memorialized here as “Old Iron Eyes” for reasons that will become apparent. Our research required participants to wear thick, powerful contact lenses, and it seemed more efficient for us to manually apply and remove the contacts than for them to learn this skill; stressed, teary- eyed participants would not be good observers. Readers wearing contacts can empathize with their own first encounters with these lenses— it’s not normal to put a large foreign object in one’s eye, and copious tears are reflexively released to flush it out.

Jay suggested that I practice lens application and removal on him and I applied and removed the lenses every minute or so until I eventually mastered the task, many trials later. This made me a bit queasy, and I teared up a bit, but Jay seemed unconcerned, once chatting away on the telephone while I leaned over him, applying and removing the contacts. Let’s face it, touching another person’s eyeball is a special kind of intimacy. His nonchalance reduced but did not eliminate my apprehension. However, another year in this department might have done the trick: students could earn extra cash by harvesting cadaver eyeballs, which were stored in glass jars beside our lunch sacks in the lab refrigerator. Working with Jay and my hardy experimental subjects alerted me to the sympathetic tearing triggered by observing the discomfort, eye redness, and tearing of other people. My next revelation came years later, when I was a professor at my present university.

Table of Contents

introduction 1

1 yawning 12

2 laughing 39

3 vocal crying 65

4 emotional tearing 79

5 whites of the eyes 94

6 coughing 104

7 sneezing 116

8 hiccupping 129

9 vomiting and nausea 147

10 tickling 164

11 itching and scratching 176

12 farting and belching 189

13 prenatal behavior 201

appendix: the behavioral keyboard 217

notes 221

references 241

acknowledgments 263

index 265

What People are Saying About This

Rachel Herz

A lively and entertaining romp through the quirks and oddities of the least controllable of human behaviors. The writing style and topics are so provocative, one is hard pressed not to enact these behaviors while reading.
Rachel Herz, Professor of Psychiatry and Human Behavior at Brown University and author of That's Disgusting

Steven Pinker

The indefatigably curious Robert Provine explores the little quirks of behavior that--so far--have fascinated everyone but the scientists, and in doing so illuminates many aspects of our social lives, inner lives, and evolutionary origins.
Steven Pinker, Harvard College Professor of Psychology, Harvard University, and author of How the Mind Works and The Better Angels of Our Nature

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