Biological Influences
Biological Influences - Related Videos
01:30
Biological Influences on Intelligence
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2025
Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter more...
01:28
Causes of Social Behavior III: Biological and Environmental Influences
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2025
Social behavior is a complex phenomenon that arises from the interaction between biological predispositions and environmental influences. This intricate interplay shapes how individuals think, feel, and act in various social contexts. Understanding these mechanisms requires insights from psychology, neuroscience, genetics, and evolutionary theory.Environmental Influences on Social BehaviorEnvironmental factors, including temperature, odors, and visual stimuli, play a crucial role in shaping...
07:28
Synthetic Biology
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2023
This video presents synthetic biology and its role in bioengineering. Synthetic biology refers to the methods used to genetically modify organisms in order to make them capable of producing large quantities of a product. This product could be a protein that the cell already makes or a new protein that has been encoded in a newly-inserted DNA sequence. Here, we discuss how an organism's genetic material is modified using transformation or transfection. Then, the process is shown in the...
01:57
What is Conservation Biology?
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2019
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials. Ecosystems also perform critical services, such as purifying our air and water. A large body of evidence indicates that such ecosystem services depend on biodiversity. Furthermore,...
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Influences on Development
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2026
Human development is shaped by two broad categories of influences: internal and external factors. Internal influences primarily stem from heredity and biological processes, while external influences arise from the environment. Development reflects the continuous interaction between these factors rather than either one alone.Internal InfluencesHeredity refers to genetic information inherited from biological parents. Genes contribute to physical characteristics, such as eye color, body structure,...
FAQs
Genetic variation can contribute to differences in behavior, mental activity, and vulnerability to mental disorders. Its effects do not operate independently of experience; learning and environmental conditions interact continuously with biological factors. This interaction helps psychologists avoid treating inherited characteristics as fixed outcomes and supports explanations of why people may respond differently to similar circumstances.
Brain structures and neurotransmitter activity contribute to how the nervous system supports cognition, emotion, and behavior. Neural signaling allows physiological processes to influence mental activity, while differences or changes in brain function may help explain individual variation and vulnerability. Examining these mechanisms gives psychological research a basis for connecting biological activity with observable patterns of thought and action.
Hormones provide an endocrine route through which physiological processes can affect behavior and mental activity. Their relevance extends across emotion, cognition, and development, where biological regulation interacts with learning and environmental conditions. Considering hormonal influences alongside neural signaling helps psychologists develop a broader account of how bodily processes contribute to psychological outcomes.
Biological influences emphasize genes, brain function, neural signaling, neurotransmitters, hormones, and related physiology, whereas learning and environmental explanations emphasize conditions outside those processes. Psychology does not need to treat these perspectives as mutually exclusive. Their continuous interaction can clarify how biological vulnerability, experience, and context jointly contribute to behavior, mental activity, and individual differences.
Psychologists can consider genetic variation, brain structures, nervous-system activity, neurotransmitter processes, hormone regulation, and changes in brain function. These forms of evidence address different biological pathways rather than representing interchangeable explanations. Examining several pathways together can strengthen accounts of emotion, cognition, development, individual differences, and vulnerability to mental disorders.
Biological research can inform assessment by identifying physiological processes relevant to psychological functioning and vulnerability. It can also support prevention efforts aimed at reducing risk and treatments that target neural or other physiological processes. These applications connect basic research on genes, brain function, hormones, and signaling with strategies for addressing mental disorders and related outcomes.
Biological factors help explain why people differ in behavior, emotion, cognition, and susceptibility to mental disorders across development. Genetic variation, changing brain function, nervous-system activity, and endocrine regulation may each contribute, while environmental conditions and learning shape their expression. This perspective therefore links physiological processes with both developmental change and differences between individuals.