INDEX

adult siblings
brother-brother relationships
care of elderly parents
care of nieces and nephews
categories of relationships
disinvestment from one another
effects of childhood rivalry
inheritance issues
intolerance for bad relationships
peacemaking
reconnection
shared childhood experiences
African Americans
blended families
care of older sister’s child
family support and loyalty
positive influence of older siblings
teen motherhood
aggression. See fights
alloparenting and sibling co-parenting
abandoned or orphaned children
academic performance and
in blended families
in divorce
extent of responsibilities
firstborn as parent’s confidant
in immigrant and ethnic communities
kinship bonds
in Latino community
by males
parent’s abdication of parental role
in single-parent families
of step- or half siblings
in traditional cultures
as universal behavior
values and relationship skills
American Academy of Pediatrics
American Prospect
American Psychological Association (APA)
animal kingdom
favoritism impulse
kin recognition
regression behavior
survival at expense of siblings
anorexia
APA (American Psychological Association)
arguments. See fights
artistry, as low-power strategy
Averett, Susan
Avioli, Paula

Bank, Lew
Basic Principles of Psychoanalysis (Brill)
Beatty, Warren
Bedford, Victoria
on attachment figures of married versus unmarried siblings
on brother-brother adult relationships
on effects of favoritism
on hourglass effect in sibling relationships
on inheritance issues
on intolerance for bad adult sibling relationships
on lingering effects of childhood battles
Men in Relationships
between-family studies
biological influences. See evolutionary and genetic factors
birth order
age gap
agreeableness and interpersonal skills
ambiguity and shifts in
artistry and
career and earnings
characteristics and roles associated with
cultural reinforcement of firstborn advantage
de-identification
elder care
family size
firstborn advantage
functional firstborns
health and
homosexuality and
humor and
IQ and
kin-keeping behavior
last child at home
low-power strategies of later-borns
middle-borns’ connection to family
middle-borns’ role
parental favoritism in three-child families
privileges for second-born
risk taking
skepticism concerning significance of
studies of
theory-of-mind insight and
younger brothers of successful men
See also firstborns
Black, Sandra
blended families
birth of half siblings
bullying
disciplinary duties
dyads
ethnicity and income level
favoritism toward blood children
genetic bias against non-kin
honesty and openness concerning
kin-like bonds
Nonshared Environment of Adolescent Development (NEAD) study
number of children
relocation to new home
sibling caretaking responsibilities
sibling rankings
stepchild-stepparent relationship
Boer, Frits
Bogaert, Anthony
Born to Rebel (Sulloway)
Bowles, Samuel
Brill, Abraham Arden
British Medical Journal
Burns, Ken and Ric
Bush, George W.

career, birth order and
care of elderly parents
care of siblings. See alloparenting and sibling co-parenting
Centers for Disease Control
Cheever, John
China, one-child policy in
Chinese Americans
Ciani, Andrea Camperio
Cleveland, Bo
Clinton, Bill
Coen, Joel and Ethan
Cohen, Deborah
competitiveness. See rivalry
conflict. See fights
Conger, Katherine
documentation of parental favoritism
on exploitation of parental favoritism
on firstborn as single parent’s confidant
on scattering of siblings
on sibling research
on siblings’ shared experiences
on uniqueness of sibling relationship
Contents of Children’s Minds on Entering School, The (Hall)
co-parenting. See alloparenting and sibling co-parenting
Crawford, Cindy
crime

Dattner, Ben
on birth order and approach to work
business analogy of parental attention
on firstborn’s loyalty to parents
on firstborn’s trauma at arrival of sibling
on parental investment in firstborn
Death of a Salesman (Miller)
de-identification
of boys from sisters
of middle-borns
from teen mother
de la Playa, June
delinquency training
dethronement
Developmental Authority journal
Dickens, Charles
DiLalla, Lisabeth
on sibling collaboration
on sibling language
on social development of twins
divorce
conflict among siblings
custody as retribution
destructive impact on children
parental alliances with children
rate of
separation of siblings
strengthening of sibling bonds
triangulation
Dreams from My Father (Obama)
Dreyer, Lisa
drug and alcohol use
Dunn, Jeremy and Ellen
Dunn, Judith
on benefit of discussing shared trauma
on fighting between sisters
on relationship between aged sisters
on sense of relatedness to step- or half siblings
on teasing and bullying by girls
Duvall, Wayne
dyads

East, Patricia
on age gap between sisters
on fair treatment by parents
on family closeness after birth of baby
on Latino single-parent families
on parental attention to younger sister of teen mother
study of family influences in teen pregnancy
on younger siblings of teen mothers
Edwards, Rosalind
elder care
English Men of Science (Galton)
Everett, Tom
evolutionary and genetic factors
competition for parental attention
degree of relatedness as basis for social behavior
distancing from nonviable child
family bonding at birth of baby
favoritism impulse
favoritism toward blood children
firstborn favoritism
in homosexuality
incest aversion
preference for male offspring
recognition of kin and potential mate

fairness issues
Falbo, Toni
families
compared to other organizations
configurations constituting
connectedness after birth of baby
domains
dyads
extended
“going for kin,”
size of
See also blended families; divorce
Farquhar, Michael
favoritism
toward blood children over stepchildren
toward boys
children’s management of
cross-gender preferences
decrease in significance of
defensible reasons for
differential but fair treatment
domain dependence
evolutionary basis for
family size and
toward firstborns
impact on favored child
impact on unfavored children
Japanese daughter first, son second tradition
protectiveness toward weakest offspring
stability of patterns
in three- or more child families
ubiquity of
Feinberg, Mark
femaleness assumption
Ferrantini, Maurizio
fights
aggression toward younger sibling
attention getting
fairness issues
frequency of
hierarchical nature of
justification and rule generalization
over possessions
parental favoritism patterns and
parental intervention
peacemaking
physical violence
positive aspects of
real versus play
sister-brother
sister-sister
stepsibling resentments
violence outside home and
See also rivalry
Finstad, Suzanne
firstborns
in abusive families
age at time of second child’s birth
aggression toward younger sibling
conscientiousness
dethronement
expectations for
favoritism toward
high-power strategy
kin-keeping behavior
loyalty to parents
maternal preference for firstborn son
novelty to parents
parental investment in
privileges
regression behavior
risk avoidance
as single parent’s confidant
See also birth order
Fortune magazine
Fraser, David
functional firstborns

Gadagkar, Raghavendra
Galton, Francis
gays. See homosexuality
gender
closeness to sibling’s children
elder care
fetal development of mixed-gender twins
parental cross-gender preferences
parental preference for boys
parental preference in three-child families
segregation
of sibling caregiver in single-parent home
sibling influence on tobacco use
siblings in divorce
willingness to provide child care
See also opposite-sex siblings
genetic factors. See evolutionary and genetic factors
Genghis Khan
Gibbons, Frederick
“going for kin,”
Gold, Deborah
Goodall, Jane
Gould, Kip
guilt
of favored child
of married sibling
self and sibling blame for parents’ divorce
Gyllenhaal, Jake

Hagen, Edward
Hall, G. Stanley
Hamilton, W. D., and Hamilton’s rule
Hamilton-Giachritsis, Catherine
Harris, Judith Rich
Hawaii, alloparenting tradition in
Hawthorne effect
health, birth order and
Hellmann, John
Henry, Roseann
Herrick, Paige
Hetherington, Mavis
Hill, Sarah
Hispanics. See Latinos/Hispanics
homosexuality
attentiveness to sibling’s children
family’s adaptation to
family size and
finger length and
inner ear vibrations and
left-handedness and
number of older male siblings and
open discussion of
siblings’ acceptance of
sibling’s anxieties about own sexuality
hostility. See fights
Howe, Nina
Hrdy, Sarah Blaffer
humor, as low-power strategy

Ickes, William
incest
cultural measures against
defining
evolutionary aversion strategies
India, gender imbalance in
IQ
birth order and
of second-born after death of firstborn
size of family and
Israel, kibbutz effect in

Japan, parental favoritism tradition in
Jenkins, Jennifer
Journal of Divorce and Remarriage
Journal of Family Psychology

Kennedy family
Kennedy Obsession (Hellmann)
Kenya, alloparenting tradition in
kibbutz effect
kin-keeping behavior
Kluger, Alejandra
Kluger, Jeffrey
adult relationship with brothers
adult relationship with father
balance of power in sibling hierarchy
blended family
daughters
divorce of parents
favoritism of parents
fights with brothers
half siblings
homosexual brother
influence of brothers upon one another
middle-born status
mutual support among brothers
parenting philosophy
parentless situation
personal interest in sibling relationships
stepsisters
Time magazine stories on sibling relationships
as uncle
Kramer, Laurie
on complicated nature of sibling relationships
on dislike for sibling’s partner
on parental favoritism
on sibling fighting
on stereotyping of twins
on study of sibling relationships

last-borns. See birth order
Latinos/Hispanics
blended families
care of older sister’s child
family support and loyalty
sibling bonds in single-parent families
teen motherhood
lesbians. See homosexuality
Lieberman, Debra
Lindstrom, Pia
Lopez, Davianka

Maccoby, Eleanor
MacLaine, Shirley
major histocompatibility complex (MHC)
March of Dimes
marriage
maternal fecundity theory
McGuire, Shirley
on building of cooperation and trust
on sibling bonds in divorce
on stepsibling competition
on strength of blended families
McKay, Bradley and Pete
Mead, Margaret
Men in Relationships (Bedford and Avioli)
MHC (major histocompatibility complex)
middle-borns. See birth order
Miller, Arthur
Miracle Worker, The (movie)
Mock, Douglas
Mom, Dad’m Gay (Savin-Williams)
More Than Kin and Less Than Kind (Mock)
Mother Nature (Hrdy)
mothers
age of, child’s health and
age of, child’s IQ and
child-rearing burden
compassion toward weakest child
evolutionary strategies for offspring’s survival
favoritism toward firstborn son
homosexual children
postpartum depression
See also parents
Moulay Ismaïl
multiple-birth siblings.
See also twins
Muth, Allen and Patricia

Noland, Virginia
nuisance behavior
Nurture Assumption, The (Harris)

Obama, Barack
O’Connor, Thomas
only children. See singletons
opposite-sex siblings
incest
mentoring for mixed-sex life
opposite-gender traits
as standard in choice of romantic partner

parents
abdication of parental role
attention to last child at home
big-picture role in family
confiding in firstborn
elderly, care of
family size
Mexican American parenting style
stepparent-stepchild relationship
See also divorce; favoritism; mothers
Paulhus, Delroy
peacemaking
Perlman, Michal
Pew Research Center
Plomin, Robert
Polynesia, alloparenting in
postpartum depression (PPD)
pregnancy. See teen pregnancy
Proceedings of the Royal Society

Recchia, Holly
reciprocal altruism
regression
Reiss, David
remarriage. See blended families
risk taking
among firstborns versus later-borns
among teens
anorexia and self-mutilation
criminal and violent behavior
de-identification by younger sibling
drug and alcohol use
influence of older siblings
National Longitudinal Survey of Youth
protection of sibling from
smoking
See also teen pregnancy
rivalry
among stepsiblings
anorexia and
attention-getting fights
firstborn dethronement
genetic basis for competitiveness
long-term effects
during parents’ divorce
in single-parent families
teen pregnancy and
See also fights
Rodgers, Joseph
Rogers, Ben
Ross, Hildy

Salmon, Catherine
on birth order and risk taking
on care of sibling’s children
on children’s autonomy
on family loyalty of middle-borns
on kin-keeping behavior
on parental favoritism
on relationship between unmarried and married siblings
on sibling aggression and provocation
Samoa, homosexuality in
Savin-Williams, Ritch
Segal, Nancy
self-esteem
anorexia and
of middle-borns
of unfavored child
self-mutilation
sex. See gender; opposite-sex siblings
sexuality. See homosexuality; incest
Shaw, Daniel
on adult sibling relationships
on parental attention to only child
on parental role in family
singletons
appreciation of only-child experience
autonomy and self-containment
benefits and advantages
concerns about
extended families of
number of
pressure on
socialization and friendships
Skinner, William
smoking
Snyder, Jim
St. Clair, Colleen
Steeves, Jennifer
stepsiblings. See blended families
Stocker, Clare
Stone, Larry
Stormshak, Elizabeth
Strohschein, Lisa
Strozier, Bob
substance abuse
Sullivan, Annie
Sulloway, Frank
on birth order in abusive families
on birth order in blended families
Born to Rebel
on competitiveness
on individual relationships within family
on later-born risk taking
on least favored status
on middle-born self-esteem
on threshold effect of IQ

teen pregnancy
adult status of teen mother
child care by younger sibling
family closeness through
influence on younger sibling
parental attention to younger sister of teen mother
rate of
in single-parent homes
Teresi, Dick
theory of mind
threshold effects
Torres, Vivian
Treasury of Great American Scandals, A (Farquhar)
triangulation
among multiple-birth siblings
in divorce
triplets and larger groups of multiple-birth siblings
Trivers, Robert
Tucker, Corinna Jenkins
twins
behavioral collaboration
behavioral similarities of identical twins
developmental disadvantages
emotional bond between identical twins
establishment of separate identities
genetic makeup
intuition between
longevity of identical twins
masculinization of female in mixed-gender pair
Minnesota Twin Family Study (MTFS)
shared language
within triplet group

Updegraff, Kimberly

Vandereycken, Walter
Vasey, Paul
Vernon, Tony
violence, criminal
violence among siblings. See fights
Vistage

Warren Beatty (Finstad)
Wasserstein, Wendy
Weisner, Tom
Whiteman, Shawn
Wichman, Aaron
Wilson, E. O.
Wong-Cheng, Wynne

Zajonc, Robert
Zweigenhaft, Richard