Introduction to Psychology Essay Example: Write Perfectly

Introduction to Psychology Essay Example : Write PerfectlyIntroduction to Psychology Assignment Brief

Assignment Instructions Overview

In this Introduction to Psychology assignment, you will delve into the fascinating realm of human intelligence and the factors that shape it. You will explore the definitions of intelligence provided by various scholars, psychologists, and experts and investigate the multifaceted nature of this cognitive trait.

Understanding Introduction to Psychology Assignment

Your assignment’s primary focus will be to comprehend the internal and external factors that influence intelligence. You will explore the interplay between genetic predisposition and environmental influences in shaping an individual’s cognitive abilities. Furthermore, you will assess how pre-natal and post-natal environments, family dynamics, societal factors, economic status, cultural background, and gender roles impact intelligence.

The Student’s Role:

As the student, your role in this assignment is to:

  • Define Intelligence: Begin by summarizing the various definitions of intelligence provided by scholars and psychologists. Highlight the common threads that run through these definitions, emphasizing the multidimensional nature of intelligence.
  • Examine Intelligence Quotient (IQ): Explore the concept of Intelligence Quotient (IQ) and its measurement. Explain the deviation IQ method and the typical IQ score range in the population.
  • Internal Factors: Dive into the discussion of internal factors that influence intelligence. Delve into the genetic constitution of individuals and its role in determining intelligence. Discuss the varying perspectives on the heritability of intelligence and provide examples or studies that support these perspectives.
  • External Factors: Shift your focus to external factors. Categorize these factors into pre-natal and post-natal environments, home environments, societal influences, parent-child relationships, economic status, culture, and gender roles. Explain how each of these external factors can impact the development of intelligence.
  • Case Studies: If available, provide case studies or real-world examples that illustrate the impact of external factors on intelligence. These examples can help solidify your understanding of the subject matter.
  • Conclusion: Summarize your findings and emphasize the interconnectedness of internal and external factors in shaping human intelligence. Highlight that intelligence is a complex trait influenced by a combination of genetic and environmental factors.


Intelligence is a complex and multifaceted trait that has intrigued scholars and psychologists for generations. Defining intelligence is no simple task, as it encompasses a wide range of cognitive abilities and adaptability to various situations. This essay delves into the concept of intelligence, discussing its definition and the factors that contribute to its development. It is widely accepted that both internal and external factors play pivotal roles in shaping an individual’s intelligence.

Definition of Intelligence

Before examining the factors influencing intelligence, it is essential to establish a working definition of the term. Numerous scholars have proposed definitions over time. Terman (1921) defines intelligence as “the ability to engage in abstract thinking,” emphasizing abstract reasoning. Pintner offers another perspective, defining intelligence as “the ability to adapt adequately to relatively new life situations,” highlighting its practical and adaptive nature. Robert J. Sternberg associates intelligence closely with reasoning and problem-solving abilities. In essence, intelligence can be understood as the capacity to apply reason to adapt to one’s environment. It involves mental abilities such as planning, problem-solving, abstract thinking, understanding complex situations, and rapid learning from daily experiences. Intelligence transcends mere academic proficiency, encompassing a deeper understanding of one’s surroundings and the ability to navigate them effectively.

Measurement of Intelligence

Intelligence is typically measured using standardized assessments, with the most common metric being the Intelligence Quotient (IQ). Psychologist William Stern introduced the concept of IQ, which is calculated using a deviation IQ method. According to this method, most individuals score within the range of 85 to 115, with only 5% of the population obtaining scores of 125 or higher.

Factors Influencing Intelligence

The development of human intelligence is influenced by both internal and external factors, and it is crucial to recognize the interconnectedness of these factors.

Internal Factors

Internal factors pertain to an individual’s genetic makeup, shaping their innate cognitive abilities and potential for intelligence. While experts debate the exact degree to which genetics influence intelligence, it is widely acknowledged that genetic factors play a significant role.

Genetics: Genetics, often considered one of the primary determinants of intelligence, has been a subject of extensive study. Researchers have conducted experiments involving twins, both fraternal and identical, as well as adopted children, to investigate the heritability of intelligence. While some argue that intelligence is highly heritable (Herrnstein and Murray), others suggest a more balanced view (Devlin, Daniels, and Roeder; Plomin). It is evident that genetic factors contribute to intelligence, but they do not provide a comprehensive explanation.

External Factors

External factors encompass the environment and experiences an individual encounters throughout their life. These factors significantly shape cognitive development and intelligence.

Pre-natal Environment: The health and well-being of the expectant mother during pregnancy are critical for the child’s development. Factors such as nutrition, emotional and psychological state, and substance use during pregnancy can impact the child’s mental health. Proper nutrition positively affects the child’s mental health, while maternal stress and substance abuse can lead to issues such as irritability, insomnia, and decreased appetite in the child.

Post-natal Environment: The environment in which a child is raised greatly influences their intelligence. A nurturing and stimulating home environment fosters curiosity and accelerates learning, while a hostile or stressful environment hinders intellectual growth. Parent-child relationships also play a pivotal role, as children raised in loving and supportive homes tend to explore their abilities and learn more efficiently.

Societal Influences: The broader societal context in which a child grows up can impact their intellectual development. Environments that fail to stimulate cognitive growth can lead to lower intelligence quotient (IQ) scores. Studies have shown that changes in a child’s environment can have a profound impact, with children transferred from less stimulating environments to more enriching ones displaying increased intelligence over time.

Economic Status: Economic disparities can significantly influence a child’s intelligence. Children from affluent families often have access to better nutrition, education, and opportunities, leading to higher IQ scores. Economic status also affects learning attitudes and problem-solving approaches, further shaping intelligence levels.

Race and Culture: Some studies have suggested variations in intelligence levels among different racial and cultural groups. These differences may result from varying attitudes, problem-solving approaches, exposure levels, and societal stimuli. However, it is essential to recognize that these differences are often influenced by socioeconomic factors.

Gender Influences: Gender biases can impact intelligence testing, with societal expectations sometimes leading to lower scores for girls. Modern societies are gradually moving away from such biases, as informed teachers and educational systems strive to provide equal opportunities for all children.


In conclusion, intelligence is a multifaceted trait that defies a singular definition. It encompasses the ability to reason, solve problems, think abstractly, comprehend complex situations, and learn from experiences. Intelligence is influenced by both internal and external factors, with genetics and the environment playing intertwined roles in shaping an individual’s cognitive abilities. Recognizing the interconnectedness of these factors is essential for understanding the complex nature of intelligence and its development.

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