Topic 2: American Psychology Flashcards
Jean-Baptise Lamarck (1744-1829)
proposed that adaptive characteristics acquired during an organism’s lifetime were inherited by that organism’s offspring
this was the mechanism by which species were transformed
Inheritance of Acquired Characteristics
Lamarck’s contention that adaptive abilities developed during an organism’s lifetime are passed on to the organism’s offspring
Herbert Spencer (1820-1903)
first a follower of Lamarck and then of Darwin
Spencer applied Darwinian principles to society by saying that society should maintain a laissez-faire policy so that the ablest individuals could prevail
his position is called Social Darwinism
Spencer-Bain Principle
the observation first made by Bain and later by Spencer that behavior resulting in pleasurable consequences tends to be repeated and behavior resulting in painful consequences tend not to be
Social Darwinism
Spencer’s contention that, if given freedom to compete in society, the ablest individuals will succeed and the weaker ones will fail, and this is as it should be
Charles Darwin (1809-1882)
devised a theory of evolution that emphasized a struggle for survival that results in the natural selection of the most fit organisms
by showing the continuity between human and nonhuman animals, the importance of individual differences, and the importance of adaptive behavior, Darwin strongly influenced subsequent psychology
Thomas Malthus (1766-1834)
economist who wrote “Essay on the Principle of Population” (1798), which provided Darwin with the principle he needed to explain the observations that he had made while aboard the “Beagle”
the principle stated that because more individuals are born than environmental resources can support, there is a struggle for survival and only the fittest survive
Alfred Russell Wallace (1823-1913)
developed a theory of evolution almost identical to Darwin’s, at almost the same time that Darwin developed his theory
Struggle for Survival
the situation that arises when there are more offspring of a species than environmental resources can support
Survival of the Fittest
the notion that, in a struggle for limited resources, those organisms with traits conducive to survival under the circumstances will live and reproduce
Natural Selection
a key concept in Darwin’s theory of evolution
because more members of a species are born than environmental resources can support, nature selects those with characteristics most conducive to survival under the circumstances, which allows them to reproduce
Fitness
according to Darwin, an organism’s ability to survive and reproduce
Adaptive Features
those features that an organism possesses that allow it to survive and reproduce
Gregor Mendel (1822-1884)
the monk who is credited with discovering genetics based on his work with pea plants
Sociobiology
a modern extension of Darwin’s theory to the explanation of human and nonhuman social behavior
Evolutionary Psychology
a modern extension of Darwin’s theory to the explanation of human and nonhuman social behavior
Inclusive Fitness
the type of fitness that involves the survival and perception of copies of one’s genes into subsequent generations
with this expanded definition of fitness, one can be fit by helping their kin survive and reproduce as well as producing one’s own offspring
Francis Galton (1822-1911)
influenced by his cousin Charles Darwin, was keenly interested in the measurement of individual differences
Galton was convinced that intellectual ability is inherited and, therefore, recommended eugenics, or the selective breeding of humans
he was the first to attempt to systematically measure intelligence, to use a questionnaire to gather data, to use a word-association test, to study mental imagery, to define and use the concepts of correlation and median, and to systematically study twins
Eugenics
the use of selective breeding to increase the general intelligence of the population
Nature-Nurture Controversy
the debate over the extent to which important attributes are inherited or learned
Correlation
systematic variation between two variables
Regression Toward the Mean
the tendency for extremes to become less extreme in one’s offspring
for example, the offspring of extremely tall parents tend not be as tall as the parents
Karl Pearson (1857-1936)
devised the formula for calculating the coefficient of correlation
Coefficient of Correlation (r)
a mathematical expression indicating the magnitude of correlation between two variables