USAC Derecho Específica common mistakes
USAC Derecho Específica · Understand the traps and how to avoid them.
Choosing the answer that states the general constitutional principle (e.g. 'due process protects the right of defense') instead of the answer that names the specific procedural remedy or guarantee the fact pattern requires (e.g. nullity of the proceeding, amparo, habeas corpus).
Constitutional law questions are usually framed with abstract wording, so candidates recognize a familiar principle and stop reading; they do not check whether the stem asks what mechanism applies, who can invoke it, or what effect it produces.
What to do instead
Before answering, underline the operative verb in the stem ('interponer', 'solicitar', 'declarar', 'nulificar') and the procedural posture. Train by writing, for each guarantee, a one-line card: mechanism + who may invoke it + effect + time limit. Eliminate any option that is correct as a principle but does not match the requested action.
Applying the general rules of contractual or extracontractual civil liability when the facts involve a special regime (consumer relations, defective products, liability of directors, or strict liability for dangerous activities), and therefore choosing the wrong burden of proof, limitation period, or measure of damages.
Candidates learn the general regime first and pattern-match on the word 'daño' or 'incumplimiento'; special regimes are studied later and less often, so the general rule feels safer.
What to do instead
Build a comparison table of liability regimes with columns: source of obligation, fault requirement, burden of proof, limitation period, and damages recoverable. On each question, first classify the relationship (consumer, commercial, family, neighbor, state) and only then select the regime; explicitly reject options that import the general regime into a special one.
Confusing the legal classification of a fact pattern in criminal law: treating a mere attempt as a completed offense, an omission as commission, or a participation role (instigator, accomplice, accessory) as co-authorship, and then answering with the penalty or procedural consequence attached to the wrong classification.
Exam stems describe events in narrative order and candidates answer the moral question ('who caused it') rather than the technical one ('which title of imputation applies'); classification is also where the most similar-sounding distractors cluster.
What to do instead
For every criminal question, write the elements of the offense in a list and mark each as proven/not proven: act, result, causation, imputation title, culpability, iter criminis stage. Then answer. Drill the difference between author, co-author, instigator, and accomplice with short hypotheticals until the label is automatic.
Mixing procedural time limits and their computation: filing deadlines counted in days versus months, business days versus calendar days, the moment the term starts (notification, publication, personal notice), and the effect of suspension versus interruption, leading to an answer that is right on the rule but wrong on the date.
Time limits are memorized as isolated numbers without the computation rule attached, and exams deliberately place the notification date and a holiday inside the stem to test the computation rather than the number.
What to do instead
Maintain a single table with columns: act, term, unit (días/meses), calendar type, dies a quo, and whether it is a term to file or to act. Practice by taking ten stems and computing the exact end date on paper, including weekends and holidays, before looking at options.
Answering procedural penalty questions by choosing the harshest or most intuitive consequence (e.g. declaring the whole proceeding void, or rejecting the claim) when the correct answer is a lesser, specific effect such as a warning, a fine, or the possibility of correcting the defect within a term.
Candidates reason from fairness ('the party was harmed, so the act must be void') instead of from the principle of conservation of procedural acts and the specific sanction attached to each defect.
What to do instead
Learn the scale of procedural sanctions from least to most severe and the conditions for each: correction, warning, fine, exclusion of evidence, nullity of a specific act, nullity of the proceeding. On each question, identify the defect first, then check whether it was timely raised and whether harm was actually caused before choosing nullity.
Treating administrative acts as if they were judicial or private acts: assuming immediate enforceability is always suspended by an appeal, or that silence of the administration always means denial, or that revocation and annulment are interchangeable.
General legal instincts (appeal suspends, silence means no) conflict with administrative law's special rules, and candidates answer from instinct rather than from the specific institution.
What to do instead
Memorize three short lists: (1) acts that are immediately enforceable and their exceptions, (2) effects of administrative silence by procedure type, (3) differences between revocation, annulment of office, and judicial annulment (grounds, limits, effects on consolidated rights). Test yourself by classifying ten sample acts into these lists.
Applying civil-law termination rules to labor relationships, or answering labor questions with the general contract framework: e.g. treating severance as damages for breach, ignoring the presumption of the employment relationship, or missing that the burden of proving justified dismissal lies with the employer.
Labor law is studied as a branch of private law, so the civil contract model feels familiar; the protective principles (primacy of reality, in dubio pro operario, continuity) are stated in class but not practiced.
What to do instead
For each labor question, first state which protective principle is in play and who bears the burden of proof. Keep a two-column sheet: civil contract rule versus labor rule (form, proof, termination, effects). Practice five dismissal scenarios and write who must prove what before choosing the answer.
Confusing the commercial forms and their legal effects: picking the wrong type of company for a required number of partners or capital, or assuming a commercial contract requires a specific written form when it does not, or misidentifying which organ or which majority is competent for a corporate decision.
Company types and corporate organs are learned as lists of characteristics, so near-identical options (e.g. two types of company with limited liability) are separated only by one detail the candidate never isolated.
What to do instead
Create a comparison grid of company forms with rows for number of partners, capital, liability, transfer of shares, and governing organ. For corporate decisions, memorize a competence table (assembly vs. administrators) with required majorities. Answer by eliminating options that fail any single cell of the grid.
Answering international public law and human rights questions with domestic-law logic: assuming a treaty is directly applicable without checking its rank and self-executing character, or confusing the jurisdiction of regional human rights courts with that of political organs, or missing the requirement of prior exhaustion of domestic remedies.
Candidates study these topics briefly and late, and their everyday domestic framework (a law applies directly, courts decide everything) overrides the specific rules on incorporation, standing, and admissibility.
What to do instead
Memorize an admissibility checklist for human rights petitions: jurisdiction ratione personae, loci, temporis and materiae, exhaustion of domestic remedies and its exceptions, and time limit. Separately memorize the hierarchy of treaties in domestic law. Run every international question through the checklist before reading the options.
Reading only the first half of a long stem and selecting an option that is correct for the facts described there, without noticing that the final sentence changes the question (asks for the exception, the next procedural step, or the position of a different party).
Under time pressure candidates skim and rely on recognition of key words; exam writers place a qualifying clause at the end precisely to separate careful readers from fast ones.
What to do instead
Adopt a fixed reading protocol: read the last sentence first to learn what is being asked, then read the whole stem, then predict the answer before looking at the options. Mark negative words ('excepto', 'no', 'salvo') and party names in the stem. Practice with timed sets where you must write the predicted answer before seeing the choices.