Psych/Soc Flashcards
What is Instinctive Behavior?
Instinctive behaviors are genetically encoded and require no learning. An animal will perform instinctive behavior automatically in response to specific environmental stimuli. They are typically a fixed action pattern (FAP) that occurs as a result of a specific stimulus.

What are the characterstics of Adolesence (3)?
Adolescence is a broad term that refers to a variety of physical, cognitive, behavioral, and social changes that occur between childhood and adulthood.
In America, adolescence is viewed as a time of rebellion, freedom-seeking, and identity formation. However, cultures across the world differ in how they define and understand adolescence.
Adolescence is a developmental period that occurs after childhood but before adulthood.
It is NOT a fixed period of time (i.e., 12-18).

What is the Patellar Tendon reflex and who exhibits it?
The patellar reflex is an adult reflex. It occurs when the leg automatically jerks upward in response to a tap on the tendon under the kneecap.

What are the study designs (2) are appropriate for Sociological Study of human behavior?
Retrospective study and Cross-sectional study
Retrospective study allow retroactive study of large populations.
Cross-sectional studies use data obtained at a single time point to identify special features of the population under study.
What are the psychological constructs (3) used to describe human behavior?
Memory, Cognition and Personality
Memory - Psychological descriptions of human behavior include constructs that refer to underlying mental states and abilities.
Cognition - is a term for human thought processes that may behavior, including knowledge acquisition, reasoning, decision-making, and so on.
Personality - is a construct that psychologists use to describe relatively enduring tendencies that guide a person’s behavior in various settings.
What is an Adaptive Trait?
A genetic trait that helps an organism to maximize its reproductive success.
For example, in hummingbirds, a long bill can be an adaptive trait since it is both heritable and adaptive.

What is Directional Selection?
Directional selection is a mechanism of natural selection and does not happen by chance. Evolutionary Bottleneck definition is by chance.
What is the difference between Directional Selection and Evolutionary/Population/Genetic Bottleneck?
Evolutionary Bottleneck definition is by chance.
What is Evolutionary Bottleneck?
Evolutionary bottleneck is an extreme form of genetic drift in which a natural disaster reduces population size, changing the frequency of alleles present in the survivors.
What is Molecular Clock analysis?
The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins.
Molecular clock analysis is not used to estimate mutation rates. It assumes that genes mutate at a relatively constant rate, and that mutation rate is used to probe aspects of a genome’s evolution.

Where are the major language centers of the brain localized?
The major centers of the brain involved in language processing and production are localized to the left hemisphere of the brain. Broca’s in left frontal lobe. Wernicke’s in left temporal lobe.

What is the Amygdala involved in the processing of?
The amygdala is the structure handling the processing of the emotions, memories, and motivation and can be found in the brain’s temporal lobe.
The amygdala is a collection of cells near the base of the brain. There are two, one in each hemisphere or side of the brain. This is where emotions are given meaning, remembered, and attached to associations and responses to them (emotional memories).

What functions are the Cerebellum involved with?
The cerebellum is primarily involved in the smoothing and fine-tuning of motor movements and posture.

What functions is the Superior Colliculus involved in?
The superior colliculus is a paired structure consisting of two superior colluculi involved in the processing of visual information and production of visual reflexes.

What hormones are produced by the Anterior Pituitary?
ACTH is produced by anterior pituitary. FLAT PEG.

How does Thyroxine affect metabolism?
Thyroxine is secreted by the thyroid to regulate metabolism. Excess thyroxine would speed up metabolism which would likely lead to increased hunger.

Where are the adrenal medulla and cortex located?
The adrenal medulla and cortex are situated atop the kidney, not the pancreas.

How is the -70mV resting membrane potential distributed charge-wise?
Know SAME DAVE mneumonic. Know that outside of neurons has positive charges and inside has negative charges. The resting membrane potential of a neuron is -70 mV, meaning that the outside carries more positive charge.

What is the difference between agonist and antagonist receptor interaction?
An agonist is a compound which will activate a receptor subtype despite not necessarily traditionally being associated as a receptor for that ligand, and induce receptor activity. An antagonist is a compound which will bind to a receptor but not produce any receptor activity. Therefore, an antagonist effectively inhibits a receptor.

Are the SNS and PNS simultaneously active on a target organ?
The sympathetic and parasympathetic nervous systems both have a “tone” at any given time- that is, they both have a certain non-zero amount to which they are acting on target organs. Neither is ever fully inactive. For example, during a period of rest perhaps the PNS is exerting a much stronger effect than the SNS. The SNS uses epinephrine and norepinephrine, whereas the PNS uses primarily acetylcholine.

What is the function of the prefrontal cortex and is it a part of the limbic system?
The role of the prefrontal cortex includes motivational and impulse-control processes that help us respond to limbic system changes, but it is not part of the limbic system.

Which hemisphere of the brain is largely more involved in language processing and analytical tasks?
The lobes and many structures of the brain are largely divisible into a “left and right” hemisphere. The left side of the frontal lobe of the brain, for example, contains Broca’s area. Therefore, it is appropriate to say that the left side of the brain is more involved in language processing than the right side. This holds true for several other properties – the left side, in general, is involved more heavily in analytical tasks than the right side.

What types of protection (3) does the spine and brain have?
The spine is protected from harm by fluid (cerebrospinal fluid), membranous meninges, and strong bones (vertebrae).

What does an fMRI show (2)?
fMRI is used to image both structure and function, by relying on the differences between oxygenated and deoxygenated hemoglobin.















