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| 8965556959 | human development | the scientific study of the challenges that occur in the people as they age from conception until death | 0 | |
| 8965559659 | longitudinal design | research design in which one participant or group of participants is studied over a long period of time | 1 | |
| 8965561894 | cross-sectional design | research design in which several different age-groups of participants are studied at one particular point in time | 2 | |
| 8965565097 | cross-sequential design | research design in which participants are first studied by means of a cross-sectional design but are also followed and assessed for a period of time | 3 | |
| 8965636918 | nature | the influence of our inherited characteristics on our personality, physical growth, intellectual growth, and social interactions | 4 | |
| 8965636919 | nurture | the influence of the environment on personality, physical growth, intellectual growth, and social interactions | 5 | |
| 8965661828 | genetics | the science of inherited traits | 6 | |
| 8965667381 | DNA (deoxyribonucleic acid) | special molecule that contains the genetic material of the organism | 7 | |
| 8965667382 | gene | section of DNA having the same arrangement of chemical elements | 8 | |
| 8965670187 | chromosome | tightly wound strand of genetic material or DNA | 9 | |
| 8965670188 | dominant | referring to a gene that actively controls the expression of a trait | 10 | |
| 8965673008 | recessive | referring to a gene that only influences the expression of a trait when paired with an identical gene | 11 | |
| 8965729064 | conception | the moment at which a female becomes pregnant | 12 | |
| 8965731544 | ovum | the female sex cell, or egg | 13 | |
| 8965731545 | fertilization | the nion of the ovum and sperm | 14 | |
| 8965734292 | zygote | cell resulting from the uniting of the ovum and the sperm | 15 | |
| 8965734293 | monozygotic twins | identical twins formed when one zygote splits into two separate masses of cells, each of which develops into a separate embryo | 16 | |
| 8965737431 | dizygotic twins | often called fraternal twins, occurring when two eggs each get fertilized by two different sperm, resulting in two zygotes in the uterus at the same time | 17 | |
| 8965796092 | embryo | name for the developing organism from two weeks to eight weeks after fertilization | 18 | |
| 8965798411 | embryonic period | the period from two to eight weeks after fertilization, during which the major organs and structures of the organism develop | 19 | |
| 8965798412 | critical periods | times during which certain environmental influences can have an impact on the development of the infant | 20 | |
| 8965801288 | teratogen | any factor that can cause a birth defect | 21 | |
| 8965962730 | fetal period | time from about eight weeks after conception until the birth of the child | 22 | |
| 8965962731 | fetus | name for the developing organism from eight weeks after fertilization to the birth of the baby | 23 | |
| 8965986887 | sensorimotor stage | piaget's first stage of cognitive development in which the infant uses its senses and motor abilities to interact with objects in the environment | 24 | |
| 8966020129 | object permanence | the knowledge that an object exists even when it is not in sight | 25 | |
| 8966023457 | pre-operational stage | Piaget's second stage of cognitive development in which the preschool child learns to use language as a means of exploring the world | 26 | |
| 8966122616 | egocentrism | the inability to see the world through anyone else's eyes | 27 | |
| 8966122617 | centration | in Piaget's theory, the tendency of a young child to focus only on one feature of an object while ignoring other relevant features | 28 | |
| 8966124972 | conservation | in Piaget's theory, the tendency of a young child to focus only on one feature of an object while ignoring other relevant features | 29 | |
| 8966124973 | irreversibility | in Piaget's theory, the inability of the young to mentally reverse an action | 30 | |
| 8966190573 | Concrete operations stage | third stage of cognitive development in which the school-age child becomes capable of logical thought processes but is not yet capable of abstract thinking | 31 | |
| 8966192459 | formal operations stage | Piaget's last stage of cognitive development, in which the adolescent becomes capable of abstract thinking | 32 | |
| 8966236590 | scaffolding | process in which a more skilled learner gives help to a less skilled learner, reducing the amount of help as the less skilled learner becomes more capable | 33 | |
| 8966239681 | zone of proximal development (ZPD) | Vygotsky's concept of the difference between what a child can do alone and what that child can do with the help of a teacher | 34 | |
| 8966267937 | temperament | the behavioral characteristics that are fairly well established at birth, such as easy, difficult, and slow to warm up | 35 | |
| 8966271671 | attachment | the emotional bond between an infant and the primary caregiver | 36 | |
| 8966294908 | Gender | the psychological aspects of being male or female | 37 | |
| 8978737125 | germinal period | first two weeks. The union of the sperm and egg cell forms a single cell called a zygote. The zygote moves along the Fallopian tube toward the uterus. | 38 | |
| 8978774217 | gender roles | 39 | ||
| 8978776196 | gender typing | 40 | ||
| 8978783886 | gender typing | 41 | ||
| 8978799633 | gender identity | 42 |
