These are the most frequently used words in this book.
1991
1993
1994
1995
although
american
among
behavior
between
biological
body
case
century
clitoris
cultural
de
desire
development
disease
doctors
early
ed
ellis
especially
et
even
example
female
first
form
gay
gender
gene
genetic
girls
hamer
heterosexual
hirschfeld
history
homosexual
homosexuality
however
human
individual
inversion
invert
journal
kinsey
lesbians
life
love
male
man
may
medical
men
might
natural
nature
new
normal
often
orientation
own
part
patients
people
perversion
point
press
rather
research
science
scientific
see
sex
sexual
sexuality
since
social
society
study
subjects
terms
theory
thus
time
trait
true
twins
two
ulrichs
university
view
woman
women
work
wright
years
york