LIFESPAN PSYCHOLOGY EXAM 1
QUESTIONS AND ANSWERS
longitudinal design - Answer-research in which the behavior of one or more participants
in a study is measured as they age
cross-sectional design - Answer-research in which people of different ages are
compared at the same point in time
sequential design - Answer-research in which researchers examine a number of
different age groups over several points in time
gene - Answer-the basic unit of genetic information; 25000 human genes
chromosome - Answer-a rod-shaped portion of DNA that are organized in 23 pairs
monozygotic twins - Answer-twins who are genetically identical
dizygotic twins - Answer-twins who are produced when two separate ova are fertilized
by two separate sperm at roughly the same time
correlation coefficient - Answer-ranges between -1 - 0 - +1; positive = value of one
factor increases, other value also increases, negative = value of one increases, value of
other declines
experiment - Answer-a process in which an investigator (experimenter) devises two
different experiences for participants
independant variable - Answer-researchers manipulate
dependant variable - Answer-researchers measure in an experiment and expect to
change as a result of the experimental manipulation
cohort - Answer-a group of people born at around the same time in the same place
teratogen - Answer-a factor that produces a birth defect
germinal stage - Answer-characterized by methodical cell division and attachment of
blastocyst to uteran wall; called a zygote; first two weeks following conception
embryonic stage - Answer-2-8 weeks following fertilization; called an embryo; 3 layers;
ectoderm, endoderm, mesoderm
QUESTIONS AND ANSWERS
longitudinal design - Answer-research in which the behavior of one or more participants
in a study is measured as they age
cross-sectional design - Answer-research in which people of different ages are
compared at the same point in time
sequential design - Answer-research in which researchers examine a number of
different age groups over several points in time
gene - Answer-the basic unit of genetic information; 25000 human genes
chromosome - Answer-a rod-shaped portion of DNA that are organized in 23 pairs
monozygotic twins - Answer-twins who are genetically identical
dizygotic twins - Answer-twins who are produced when two separate ova are fertilized
by two separate sperm at roughly the same time
correlation coefficient - Answer-ranges between -1 - 0 - +1; positive = value of one
factor increases, other value also increases, negative = value of one increases, value of
other declines
experiment - Answer-a process in which an investigator (experimenter) devises two
different experiences for participants
independant variable - Answer-researchers manipulate
dependant variable - Answer-researchers measure in an experiment and expect to
change as a result of the experimental manipulation
cohort - Answer-a group of people born at around the same time in the same place
teratogen - Answer-a factor that produces a birth defect
germinal stage - Answer-characterized by methodical cell division and attachment of
blastocyst to uteran wall; called a zygote; first two weeks following conception
embryonic stage - Answer-2-8 weeks following fertilization; called an embryo; 3 layers;
ectoderm, endoderm, mesoderm
