Introduction to Psychology

Explore psychology as the scientific study of behavior and mental processes. Learn research principles and major areas of study without diagnosing yourself or others.

4 lessonsPractice LabFinal assessmentCompletion certificate

0/4 lessons complete · Best assessment: 0% · Project pending

01 · Science and behaviorOpen lesson

Students discuss a behavior observation with an instructor. — Science and behavior · Original lesson illustration

Psychology studies behavior and mental processes using systematic methods. It includes areas such as learning, cognition, development and social behavior. A persuasive story is not the same as tested evidence. Define the question clearly and consider alternative explanations before accepting a claim about why someone acted in a particular way.

Worked example

A student’s missed deadline could reflect workload, unclear instructions or other factors rather than laziness.

Try it yourself

List two explanations for one fictional behavior.

What makes an explanation scientific?It can be examined with systematic evidenceIt sounds convincingIt labels a person permanently

02 · Research methods and causationOpen lessonLocked — complete previous lessons

Learners compare activities while discussing research methods. — Research methods and causation · Original lesson illustration

Observation describes what happens; experiments can test effects under controlled conditions when ethically appropriate. Correlation means two measures vary together, but does not by itself show that one causes the other. Sampling, measurement and confounding factors influence conclusions. Ask who was studied and how the variables were measured before generalizing a result.

Worked example

People carrying umbrellas are more often seen on wet days; umbrellas do not cause rain.

Try it yourself

Describe a correlation and one alternative explanation.

What can correlation alone establish?Definite causationThat every participant is identicalAn association, not proof of causation

03 · Learning, memory and contextOpen lessonLocked — complete previous lessons

A learner practices retrieving information with flashcards. — Learning, memory and context · Original lesson illustration

Learning involves changes associated with experience; memory includes encoding, storage and retrieval. Attention and prior knowledge affect what is remembered. Practice with retrieval can differ from rereading a page. Behavior also depends on the environment, social context and individual history. Avoid assuming that a single process explains every situation.

Worked example

A learner closes the notes and recalls three ideas, then checks which were missed.

Try it yourself

Try a short recall exercise and compare it with rereading.

Which activity directly practices retrieval?Only highlight every lineRecall ideas without looking, then checkNever test yourself

04 · Ethics and interpretationOpen lessonLocked — complete previous lessons

An instructor explains a research participation process to a volunteer. — Ethics and interpretation · Original lesson illustration

Psychological research should respect participants through informed consent, privacy and appropriate oversight. Findings have limits, and group averages do not determine every individual’s behavior. A beginner course cannot qualify someone to diagnose or provide therapy. Distinguish an educational observation from a clinical assessment and refer serious concerns to qualified support.

Worked example

A fictional survey avoids collecting names and explains participation before asking questions.

Try it yourself

Complete your research project with consent and privacy considerations.

What does this course qualify you to do?Diagnose people professionallyReplace mental-health treatmentUnderstand introductory concepts

Your completion certificate

All 4 lessons, project self-review and final assessment at 80% or higher.

Estimated study time: 2 hours. Includes reading, practice, projects and assessment; individual time varies.

Certificate locked — complete all requirements listed above. Existing progress is preserved.

About estimated study time

Lifehelper estimates time from lesson length, worked exercises, practice sessions, project work and assessments. Short foundation courses use approximately two hours; larger courses and multi-level programs use higher estimates. This is not a timer, accredited credit or verified attendance.

Documents completion of an independent Lifehelper course. Not a license, accredited qualification, or official professional certification. Estimated study time is a course estimate, not verified activity hours.