Studies have linked jealous behaviors greatly to sex

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Studies have linked jealous behaviors greatly to sex differences, showing that men typically show more if the behavior in the situation of hypothetical partner infidelity Mismatch Theory : what was adaptive in our evolutionary environment is not necessarily adaptive now, and vice versa; not all traits are adaptive. Social Darwinism: The idea that some human societies are more evolved than others; Misapplication of evolutionary ideas.
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Human Differences - We share many of our genes (and thus traits) as a result of our shared evolutionary heritage—but we also have different genotypes - Heritability: proportion of variation of a trait in a population that can be explained by genetic differences - Heritability of traits will be higher amongst individuals raised in similar environments, and lower when environments are dissimilar across individuals - But, even highly heritable traits can be modified by the environment - Human intelligence: variation within and between groups - Twin studies and adoptive studies are used to determine heritability Chapter 4: The Brain and Nervous System Evolution of the Brain - Brain cavity in humans has gotten larger over time, suggesting that the brain has grown in size throughout evolution; cognitive abilities increased and the brain increase with them - Size is relative to body size - Extent of folding; convolutions; much more prevalent in humans than most other species - Connectivity; reflects on cognitive abilities - Functional specialization; language, comprehension of speech Organization of the Nervous System - Include the central nervous system and the peripheral nervous system - Central nervous system includes the brain and spinal cord - Peripheral nervous system includes the somatic system and the autonomic system (which includes the sympathetic and parasympathetic systems) - Somatic system interacts with the external environment - Autonomic system regulates the internal environment - Sympathetic system controls ‘fight or flight’ instinct; ex. Pupils enlarge stimulates sweat glands, accelerates heartrate, inhibits digestion - Parasympathetic system controls the ‘rest and digest’ processes; ex. Constricts pupils, stimulates tear glands, slows heartbeat, activates digestion Brain Anatomy - Cerebrum : the uppermost portion of the brain, which regulates higher cognitive functions and emotional functions - Sulci : valleys in the brain Central Fissure : between the frontal and the parietal lobes Sylvian/Lateral Fissure: between the parietal and temporal lobes and frontal and temporal lobes Parieto-occipital Sulcus : between the parietal and occipital lobes - Cerebral hemispheres: Right Hemisphere, Left Hemisphere - Longitudinal Fissure : in between the two hemispheres; connecting tissue between is called the corpus callosum, which is a thick band of nerve fibres joining the left and right hemispheres and allows for inter-hemispheric communication - Frontal Lobe : upper front of the brain
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- Parietal Lobe : upper back of the brain - Temporal Lobe : bottom front of the brain - Occipital Lobe:
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