15.1 Legal Research Fundamentals

Legal research is a core paralegal competency and a recurring theme on the NALA Certified Paralegal (CP) Knowledge Exam, especially within the United States Legal System domain (15 of 100 scored points under the Effective 2024 specifications). The exam expects you to classify sources correctly, know which authorities bind a court, and understand how citators validate case law before a supervising attorney relies on your work product.

Primary Authority: The Law Itself

Primary authority is the actual law. There are four categories, and you should know the order in which they control one another when they conflict.

Constitutions

The United States Constitution is the supreme law of the land. Under the Supremacy Clause (Article VI), any federal or state law that conflicts with it is invalid. State constitutions are supreme within their states but cannot provide less protection than the federal Constitution guarantees. When a research question implicates both federal and state constitutional claims, identify which constitution supplies the higher floor of protection and whether the state provision independently expands rights.

Statutes

Statutes are laws enacted by legislatures — Congress at the federal level and state legislatures for state law. Federal statutes are compiled by subject into the United States Code (U.S.C.), organized into more than 50 titles. For example, the federal civil rights statute is codified at 42 U.S.C. § 1983. Session laws (the chronological enactments) and annotated codes (which add case notes and cross-references) are both primary for the text of the statute itself; the annotations around the text are editorial aids, not law. When a statute and a judicial opinion conflict, the statute controls so long as the statute is constitutional.

Regulations

Administrative regulations are rules promulgated by agencies (such as the Environmental Protection Agency or the Social Security Administration) under authority delegated by Congress. Federal regulations are published chronologically in the Federal Register and then codified by subject in the Code of Federal Regulations (C.F.R.). Properly promulgated regulations have the force of law. On the exam, distinguish the Federal Register (daily chronological publication of proposed and final rules) from the C.F.R. (the currently effective subject-matter compilation).

Case Law

Case law (also called common law) consists of court decisions interpreting constitutions, statutes, and regulations, and resolving disputes where no statute governs. Under the doctrine of stare decisis (to stand by things decided), courts follow precedent — prior decisions of higher courts in the same jurisdiction. Holding versus dicta matters: only the holding (the rule necessary to decide the case) is binding; dicta (comments not essential to the result) may be persuasive but need not be followed.

Mandatory vs. Persuasive Authority

A frequent exam trap is confusing these two concepts:

Note the jurisdiction requirement: even a primary source is only persuasive if it comes from a court outside the deciding court's chain of authority. A California Court of Appeal opinion is primary and mandatory for California trial courts within that appellate district's geographic reach, but only persuasive in a Nevada state court.

Secondary Authority: Explaining the Law

Secondary authority describes, explains, comments on, or helps locate the law. It is never binding, but it is where smart research often begins. The sources the exam emphasizes include:

Exam trap: Restatements are secondary authority. A Restatement section becomes binding only if a court or legislature adopts it. Likewise, headnotes — the editorial summaries at the start of a published case — are written by the publisher, not the judge, and are never authority. Never cite a headnote as if it were the court's holding.

Digests and Citators

A digest organizes case law by topic. West's Key Number System divides the law into hundreds of topics, each split into key numbers; finding one relevant key number lets you locate every headnote classified under it across jurisdictions. Digests are finding tools, not authority — they point you to cases you must still read and validate.

A citator does something different and critical: it tells you whether your authority is still good law and lists every later source that cited it. The two dominant citators are Shepard's (LexisNexis) and KeyCite (Westlaw). Always "Shepardize" or "KeyCite" a case before relying on it in a memo, brief, or Skills Exam essay.

Updating and validating authority means two things: confirming the case has not been overruled, reversed, or superseded by statute, and reading the negative citing references to see whether they truly undermine your point. A yellow signal is not a death sentence — a case distinguished on different facts may still fully support your argument. On the Knowledge Exam, expect questions that ask what action a paralegal must take after finding a promising case: the correct answer almost always includes updating with a citator before citing.

The Paralegal Research Process

On the exam and in practice, effective research follows a repeatable sequence:

1. Analyze the facts and frame the issue. Identify the jurisdiction, the parties, the procedural posture, and the legal questions before touching a database.
2. Start with secondary sources when the area is unfamiliar; a treatise, encyclopedia entry, or ALR annotation supplies vocabulary and leading cases.
3. Locate primary authority — first constitutions and statutes, then regulations, then cases — using digest topics, annotations, and citations found in the secondary sources.
4. Read authorities in full, extracting holdings rather than relying on headnotes or case briefs alone.
5. Update and validate every authority with a citator; check pocket parts or electronic currency notes for statutes and regulations.
6. Stop when the same authorities keep recurring and no new law appears; organize findings into a memorandum for the supervising attorney.

Online Research Basics

Modern research is mostly electronic. Know the two search modes: natural language searching (plain-English questions, ranked by relevance) and terms-and-connectors (Boolean) searching using operators such as AND, OR, NOT, quotation marks for exact phrases, and /s or /p for same-sentence or same-paragraph proximity. Free and low-cost resources include Google Scholar for cases, govinfo and Congress.gov for federal statutes and the Federal Register, eCFR for current regulations, state legislature and court websites, and the Public Access to Court Electronic Records (PACER) system for federal dockets and filings. Paralegal tip: subscription services often bill by search or by time, so formulate a precise query before running it — attorneys notice wasted research cost, and the Knowledge Exam rewards cost-conscious, methodical research habits.