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Developmental psychology

Explore the branch of psychology that studies how people change throughout their lives, from prenatal development to adulthood. Learn about genes, chromosomes, prenatal stages, cognitive development, and more.

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Developmental psychology

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  1. Developmental psychology

  2. The branch of psychology that studies how people change over the lifespan

  3. Chromosome

  4. A long, threadlike structure composed of twisted parallel strands of DNA; found in the nucleus of the cell

  5. Gene

  6. The basic unit of heredity that directs the development of a particular characteristic; the individual unit of DNA instructions on a chromosome

  7. Deoxyribonucleic acid (DNA)

  8. The chemical basis of heredity; carries the genetic instructions in the cell

  9. Genotype

  10. The underlying genetic makeup of a particular organism, including the genetic instructions for traits that are not actually displayed

  11. Phenotype

  12. The observable traits or characteristics of an organism as determined by the interaction of genetics and environmental factors

  13. Dominant gene • In a pair of genes, the gene containing genetic instructions that will be expressed whether paired with another dominant gene or with a recessive gene

  14. Recessive gene

  15. In a pair of genes, the gene containing genetic instructions that will not be expressed unless pair with another recessive gene

  16. Sex chromosomes

  17. Chromosomes designated as X or Y that determine biological sex; the 23rd pair of chromosomes in humans

  18. Sex-linked recessive characteristics

  19. Traits determined by recessive genes located on the X chromosome; in males, these characteristics require only one recessive gene to be expressed

  20. Prenatal stage

  21. The stage of development before birth; divided into the germinal, embryonic, and fetal periods

  22. Germinal period

  23. The first two weeks of prenatal development

  24. Embryonic period

  25. The second period of prenatal development, extending from the third week through the eighth week

  26. Teratogens

  27. Harmful agents or substances that can cause malformations or defects in an embryo or fetus

  28. Fetal period

  29. The third and longest period of prenatal development, extending from the ninth week until birth

  30. Temperament

  31. Inborn predispositions to consistently behave and react in a certain way

  32. Attachment

  33. The emotional bond that forms between an infant and caregiver(s), especially his or her parents

  34. Comprehension vocabulary

  35. The words that are understood by an infant or child

  36. Production vocabulary

  37. The words that an infant or child understands and can speak

  38. Sensorimotor stage

  39. In Piaget’s theory, the first stage of cognitive development, from birth to about age 2; the period during which the infant explores the environment and acquires knowledge through sensing and manipulating objects

  40. Object permanence

  41. The understanding that an object continues to exist even when it can no longer be seen

  42. Preoperational stage

  43. In Piaget’s theory, the second stage of cognitive development, which lasts from about age 2 to age 7; characterized by increasing use of symbols and prelogical thought process

  44. Symbolic thought

  45. The ability to use words, images, and symbols to represent the world

  46. Egocentrism

  47. In Piaget’s theory, the inability to take another person’s perspective or point of view

  48. Irreversibility

  49. In Piaget’s theory,the inability to mentally reverse a sequence of events or logical operations

  50. Centration

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