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Heredity And Environment
Survival of the fittest and natural selection summary
Natural selection in biology
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This chapter discusses The Evolutionary Perspective, Genetic Foundations, reproductive Challenges, and Heredity-Environment Interactions. Natural selection is the process by which those individuals of a species that are best adapted survive and reproduce. Darwin proposed that natural selection fuels evolution. In evolutionary theory, adaptive behavior is behavior that promotes the organism’s survival in a natural habitat. Evolutionary psychology holds that adaptation, reproduction, and “survival of the fittest” are important in shaping behavior. Ideas proposed by evolutionary developmental psychology include the view that an extended childhood period is needed to develop a large brain and learn the complexity of human social communities. According to Baltes, the benefits resulting from evolutionary selection decrease with age mainly because of a decline in reproductive fitness. At the same time, cultural needs increase. Like other theoretical approaches to development, evolutionary psychology has limitations. Bandura rejects “one-sided evolutionism” and argues for a bidirectional lin...
Darwin’s theory ties to “nature versus nurture” because its basis lies in the assumption that we are born with innate abilities. These innate abilities are then adjusted based on the environment to ensure survival. Darwin’s theory of Evolution eventually transformed into psychology’s school of thought called functionalism. Functionalism is the study of human behavior and mental processes and how these behaviors and processes assist the individual in adapting to the constantly changing environment. Darwin’s observations and theories eventually lead to the formation of comparative psychology, or the systematic study of similarities and differences within a species (Goodwin, 2012, p.141-142).
The nature vs. nurture debate: the nature side, are those such as biologists, psychologists and others in the natural sciences, argue that behavioral traits can be explained by genetics. Those taking the nurture side are sociologists and others in the social sciences, they argue that human behavior is learned and shaped through social interaction. This argument should be dismissed because you don’t have to look far to see that both genetics and our environment, plays a role in who we are and our behaviors. (Glass). The point is there is a complex relationship between nature and nurture, either one alone is insufficient to explain what makes us human. (Colt). Our heredity gives us a basic potential,...
Keith Henson a writer in evolutionary psychology once said that “Evolution acts slowly. Our psychological characteristics today are those that promoted reproductive success in the ancestral environment.” Evolution was first introduced by a naturalist by the name of Charles Darwin. Darwin had written an autobiography, at the age of 50, On the Origin of Species (1859) explaining how species evolve through time by natural selection; this theory became known as Darwinism. “Verlyn Klinkenborg, who writes editorials and vignettes on science and nature for the “New York Times”” (Muller 706) questions Darwin’s theory in one of his essays he wrote called Darwin at 200: The Ongoing Force of His Unconventional Idea. Both articles talk about the theory of Darwinism, but the authors’ use different writing techniques and were written in different time periods. Darwin himself writes to inform us on what the theory is, where as Klinkenborg goes on to explain why Darwinism is just a theory. Today, evolution is still a very controversial topic among many. It comes up in several topics that are discussed everyday such as in politics, religion and education.
Evolutionary theory is developed from Darwin’s argument that “suggests that a process of natural selection leads to the survival of the fittest and the development of traits that enable a species to adept to its environment. “ Many have taken this a step further by saying that our genetic inheritance determines not only our physical traits but also certain personality traits and social behaviors. There is such a controversy over significant behaviors that unfold because many believe that we are already pre-programmed human species. It has also been argued that evolution is reflected in functioning and structure of the nervous system and that is has evolutionary factors that have a significant influence on everyday behavior. With what is being said means that if we follow the evolutionary theory, then it would be said that we are already pre-programmed from before birth to follow certain protocols in life. Whether it is from finding a mate or by getting a job. It also believed that this theory gives use cues from our own system to follow, providing us with certain aspects of life from our ancestors. By believing in this theory we can determine that the importance of heredity when influencing human behavior. Behavioral geneticists and evolutionary psychologists have both agreed that not only do genetic factors provide specific behaviors or traits but it also shows the limitations on the emergence of such traits or behaviors. What this means is that our genetics will determine how tall we will be to how ...
The purpose of this academic piece is to critically discuss The Darwinist implication of the evolutionary psychological conception of human nature. Charles Darwin’s “natural selection” will be the main factor discussed as the theory of evolution was developed by him. Evolutionary psychology is the approach on human nature on the basis that human behavior is derived from biological factors and there are psychologists who claim that human behavior is not something one is born with but rather it is learned. According to Downes, S. M. (2010 fall edition) “Evolutionary psychology is one of the many biologically informed approaches to the study of human behavior”. This goes further to implicate that evolutionary psychology is virtually based on the claims of the human being a machine that can be programmed to do certain things and because it can be programmed it has systems in the body that allow such to happen for instance the nervous system which is the connection of the spinal cord and the brain and assists in voluntary and involuntary motor movements.
...criterion that true science is progressive. It has proven able to successfully account for apparent anomalies and generate novel predictions and explanations and therefore has the hallmarks of a currently progressive research program capable of providing us with new knowledge of how the mind works (Ketellar and Ellis 2000). A glance at the Handbook of Evolutionary Psychology (2005), edited by David Buss, shows just how vigorous and productive the field is. Important challenges remain in the discipline, however. The most important are determining the role of domain-specific versus domain-general processes and integrating evolutionary psychology with other behavioral sciences like genetics, neuroscience, and psychometrics (Buss 2004; Rice 2011). Even though critics will remain, Evolutionary Psychology will remain as a scientific discipline for the foreseeable future.
My paper is based on an article from the text’s web site (chapter 9) entitled “Lack of sleep ages body’s systems.” The basic claim of the article is that sleep deprivation has various harmful effects on the body. The reported effects include decreased ability to metabolize glucose (similar to what occurs in diabetes) and increased levels of cortisol (a stress hormone involved in memory and regulation of blood sugar levels). The article also briefly alludes (in the quote at the bottom of page 1) to unspecified changes in brain and immune functioning with sleep deprivation.
Undoubtedly, humans are unique and intricate creatures and their development is a complex process. It is this process that leads people to question, is a child’s development influenced by genetics or their environment? This long debate has been at the forefront of psychology for countless decades now and is better known as “Nature versus Nurture”. The continuous controversy over whether or not children develop their psychological attributes based on genetics (nature) or the way in which they have been raised (nurture) has occupied the minds of psychologists for years. Through thorough reading of experiments, studies, and discussions however, it is easy to be convinced that nurture does play a far more important in the development of a human than nature.
Bio-Psychologists study the principles of biology as it relates to the comprehension of psychology in the field neuroscience that underlies ones emotions, ideology, and actions (Brittanica). Based upon the conduction of research, the relationship between the brain and ones behavior extends to the physiological process in one’s intellect. Scientists are cognizant that neurotransmitters function as a significant role in mood regulation and other aspects of psychological problems including depression and anxiety. A biological perspective are relevant to psychology in three techniques including: the comparative method, physiology, and the investigation of inheritance (Saul Mc. Leod).
Psychology is the investigation of the mind and how it processes and directs our thoughts, actions and conceptions. However, in 1879 Wilhelm Wundt opened the first psychology laboratory at the University of Leipzig in Germany. Nevertheless, the origins of psychology go all the way back thousands of years starting with the early Greeks. This foundation is closely connected to biology and philosophy; and especially the subfields of physiology which is the study of the roles of living things and epistemology, which is the study of comprehension and how we understand what we have learned. The connection to physiology and epistemology is often viewed as psychology, which is the hybrid offspring of those two fields of investigation.
Public Safety Officials have been battling the difficult question of profiling for quite a while. The question is how do they know the suspected individual fit the category associated with an offense? While it has been proven that many profiling cases are somewhat directed to a racial profile, it can be proven that people, given the discretion, are able to identify explanations for a series of behavioral events by identifying what that behavior accredits to. This theory, identified by Frite Heider, “suggested that we have a tendency to give casual explanations for someone’s behavior, often by crediting either the situation or the person’s disposition,” called the attribution theory. Until recently, a study of the like was considered to be a branch of sociology and not a form of psychology. Social psychology essentially became the focus on the individual rather than the group as a whole. Many thoughtful ideas are collected in response to the studies of social psychology. Human cognition is understood to arise from interacting socially; highlighting the importance of socialization. We use social cognition to develop our explanations and our ideas on why a person’s behavior is/does what it is/does.
Many refutes the first idea that “natural selection works through differential reproductive success rather than simple differential survival” and humans vary in reproductive success across populations. Environment factors are no longer the leading force in change, instead sexual selection is what will determine evolutionary change. Before, humans mate in order to pass down their traits, now, people choose their partner based on many different factors, such as intelligence and attractiveness among others. That can be considered as “favorable traits” that can be passed onto future
Like physiology, anatomy and biology, evolutionary psychology examines human behaviour from a Darwinian perspective. That is, like physical traits, psychological ...
Child growth and development is a process that consists of some building blocks, which are components that combine in an infinite number of ways (Cherry, n.d.). As a result of the variations of building blocks in a child’s development, educators, psychologists, and philosophers have been constantly engaged in the debate of nature versus nurture debate. Many researchers agree that child development is a complex interaction between his/her genetic background (nature) and his/her environment (nurture). In essence, some developmental aspects are strongly affected by biology whereas other aspects are influenced by environmental factors. From the onset of an individu...
According to David Funder, evolutionary psychology attempts to explain behavioral patterns by analyzing how they have many been used for survival and reproduction in past generations. Evolutionary psychology gave special attention to sex differences in mating behaviors, including differences in what men and women find most attractive in each other and the strategies they use to seek and keep mates. In the book The science of Psychology by Laura A. King, stats that psychologists argue, the way we adapt is traceable to problems early humans faced in adapting to their environment. Decisions like aggressiveness, fear, our physical features and body shapes all were had the influence of what our ancestors had to do to survive.