Southern New Hampshire University

PSY-300: Biopsychology

A study guide to SNHU's PSY-300, which explains how the brain and nervous system shape behavior, thought and emotion.

Updated October 2026 · 5 min read

PSY-300 at Southern New Hampshire University explores how the brain influences behaviors, thoughts and feelings.

The catalog lists evolution, genetics, anatomy and function of the nervous system, psychopharmacology, brain dysfunction, neuropsychological testing, sleep and circadian rhythms, neuroplasticity, emotions and mental illness.

PSY-108 is the listed prerequisite. Students find the course challenging because of the volume of new terminology and because each topic links structure, function and behavior. Memorizing names is not enough; assignments ask you to explain how and why.

Course at a Glance

ItemDetails
UniversitySouthern New Hampshire University (SNHU)
Course codePSY-300
LevelUndergraduate
Credits3 (per the SNHU catalog)
PrerequisitePSY-108 Introduction to Psychology

What PSY-300 Covers

The catalog topics can be organized by what they ask you to explain.

AreaTypical questions
Evolution and geneticsHow do inherited traits and natural selection relate to behavior?
Nervous system anatomy and functionWhich structures do what, and how do neurons communicate?
PsychopharmacologyHow do drugs change neural signaling and behavior?
Brain dysfunction and testingWhat goes wrong after injury or disease and how is it assessed?
Sleep and circadian rhythmsWhat regulates sleep and why does it matter?
NeuroplasticityHow does the brain change with experience and recovery?
Emotions and mental illnessWhat neural mechanisms are linked to emotion and disorder?

Key Ideas Explained

From Structure to Function

For each brain region, learn what it is involved in, what evidence links it to that role and what happens when it is damaged. Use cautious wording; most functions involve networks, not a single area.

Illustration: When explaining memory, avoid saying one structure "stores memories". Say that research links certain structures to forming new memories, describe how evidence from injury or imaging supports this, and note that memory involves widespread networks.

Neural Communication

Be able to describe how a signal travels along a neuron and across a synapse, and how neurotransmitters and drugs alter that process.

Plasticity

The brain changes with learning and recovery. Link plasticity to examples such as rehabilitation after injury, and note limits as well as possibilities.

Typical Assignments and How to Approach Them

The catalog does not list graded assessments. The table shows common kinds of work for a biopsychology course; confirm yours in the course.

Assignment typeWhat it testsHow to approach it
Quizzes or examsTerminology and structure-function linksUse flashcards with a one-line function and one piece of evidence
Discussion postsExplaining a mechanism in plain languageDefine terms, then explain the pathway step by step
Case analysesApplying knowledge to dysfunctionLink symptoms to likely systems, noting uncertainty
Research summariesReading neuroscience evidenceState method, finding and limits, avoiding overclaiming

Where Students Get Stuck

Study Table for a Brain System

ColumnWhat to writeWhy
StructureName and location in plain wordsAnchors the vocabulary
FunctionWhat it is involved inLinks to behavior
EvidenceStudy type: injury, imaging or experimentSupports claims
DysfunctionWhat happens when it is affectedSupports case analysis
LimitsWhat the evidence cannot showKeeps claims careful

Explaining a Mechanism Step by Step

Many questions ask how something works, such as how a drug changes mood or how sleep is regulated. Answer in a chain: the starting event, the structure or chemical involved, what it changes and the resulting behavior. Keep each link to one sentence.

Chains are easier to check than paragraphs of description, and they expose gaps in your understanding. If you cannot say what comes next, that is the part to revisit in your notes before you write the answer.

Revision Routine for Terminology

A short, repeated routine beats long cramming sessions. Each day, pick one system, write its key terms from memory, check against your notes and circle the ones you missed. Next day, start with the circled terms.

Once a week, explain a whole pathway aloud without notes. Where you stumble is where your understanding is thin, and that is the right place to spend extra time before an assessment.

Study Tips for PSY-300

How We Help with PSY-300

Send the prompt, rubric and notes. A writer can prepare a model explanation, build a study table for a system, or review your draft for accuracy of terminology and caution with evidence. For wider support see our psychology assignment help guide.

GradeEssays is independent of Southern New Hampshire University. Our work is a study and reference aid: use it to understand the material, then complete and submit your own work under Southern New Hampshire University's academic integrity policy.

Every order is written from scratch and plagiarism-checked, comes with free revisions within the scope of your original request, and is refunded in full if it is late.

Make the Brain Easier to Study

Share the assignment and readings. A psychology writer prepares a clear custom response with diagrams described in words.

Start My PSY-300 Help

Free revisions · Full refund if late · Written from scratch for your order

Frequently Asked Questions

What is the prerequisite for PSY-300?

SNHU lists PSY-108 Introduction to Psychology.

Is PSY-300 a biology course?

It is a psychology course that uses biology to explain behavior, thought and emotion.

Which topics are covered?

The catalog lists evolution, genetics, nervous system anatomy and function, psychopharmacology, brain dysfunction, neuropsychological testing, sleep, neuroplasticity, emotions and mental illness.

How do I learn so many terms?

Group them by system, use active recall and attach each term to a function and evidence.

How cautious should I be with brain imaging?

Very. Describe what a study measured and avoid saying an area "causes" a behavior from imaging alone.

Can you review my draft?

Yes. We check terminology, accuracy and citations.