Studies have linked jealous behaviors greatly to sex differences, showing that men typically show more if the behavior in the situation of hypothetical partner infidelityMismatch Theory: what was adaptive in our evolutionary environment is not necessarily adaptivenow, and vice versa; not all traits are adaptive.Social Darwinism:The idea that some human societies are more evolved than others;Misapplicationof 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 heritabilityChapter 4: The Brain and Nervous SystemEvolution of the Brain-Brain cavity in humans has gotten larger over time, suggesting that the brain has grown insize 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 speechOrganization of the Nervous System-Include the central nervous system and the peripheral nervous system-Central nervous systemincludes the brain and spinal cord-Peripheral nervous systemincludes the somatic system and the autonomic system (whichincludes the sympathetic and parasympathetic systems)-Somatic systeminteracts with the external environment-Autonomic systemregulates the internal environment-Sympathetic systemcontrols ‘fight or flight’ instinct; ex. Pupils enlarge stimulates sweat glands, accelerates heartrate, inhibits digestion -Parasympathetic systemcontrols the ‘rest and digest’ processes; ex. Constricts pupils, stimulates tear glands, slows heartbeat, activates digestionBrain Anatomy-Cerebrum: the uppermost portion of the brain, which regulates higher cognitive functionsand emotional functions-Sulci: valleys in the brainCentral Fissure: between the frontal and the parietal lobesSylvian/Lateral Fissure:between the parietal and temporal lobes and frontal and temporal lobesParieto-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
-Parietal Lobe: upper back of the brain-Temporal Lobe: bottom front of the brain-Occipital Lobe:
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