The pattern of continuity and change in human capabilities that occurs throughout life, involving
both growth and decline.
Nature
An individual's biological inheritance, especially his or her genes.
Nurture
An individual's environmental and social experiences.
Preferential Looking
A research technique that involves giving an infant a choice of what object to look at.
Accommodation
An individual's adjustment of his or her schemas to new information.
Assimilation
An individual's incorporation of new information into existing knowledge.
Sensorimotor Stage
Piaget's first stage of cognitive development, lasting from birth to about 2 years of age, during
which infants construct an understanding of the world by coordinating sensory experiences with
motor (physical) actions.
Preoperational Stage
Piaget's second stage of cognitive development, lasting from about 2 to 7 years of age, during
which thought is more symbolic than sensorimotor thought.
Concrete Operational Stage
Piaget's third stage of cognitive development, lasting from about 7 to 11 years of age, during
which the individual uses operations and replaces intuitive reasoning with logical reasoning in
concrete situations.
Formal Operational Stage
Piaget's fourth stage of cognitive development, which begins at age 11 to 15 and continues
through the adulthood; it features thinking about things that are not concrete, making predictions,
and using logic to come up with hypotheses about the future.
Temperament
An individual's behavioral style and characteristic way of responding.
Secure Attachment
The ways that infants use their caregiver, usually their mother, as a secure base from which to
explore the environment.
Infant Attachment
, The close emotional bond between an infant and its caregiver.
Secure Attachment
The ways that infants use their caregiver, usually their mother, as a secure base from which to
explore the environment.
Authoritarian Parenting
A restrictive, punitive style in which the parent exhorts the child to follow the parent's directions
and to value hard work and effort.
Authoritative Parenting
A parenting style that encourages the child to be independent but that still places limits and
controls on behavior.
Neglectful Parenting
A parenting style characterized by a lack of parental involvement in the child's life.
Permissive Parenting
A parenting style characterized by the placement of few limits on the child's behavior.
Prosocial Behavior
Behavior that is intended to benefit other people.
Puberty
A period of rapid skeletal and sexual maturation that occurs mainly in early adolescence.
Androgens
The main class of male sex hormones.
Estrogens
The main class of female sex hormones.
Identity vs. Identity Confusion
Erikson's fifth psychological stage, in which adolescents face the challenge of finding out who
they are, what they are all about, and where they are going in life.
Emerging Adulthood
The transitional period from adolescence to adulthood, spanning approximately 18 to 25 years of
age.
Wisdom
Expert knowledge about the practical aspects of life.
Physical Processes
Involve changes in an individual's biological nature.