CSET: American Sign Language common mistakes
CSET: American Sign Language · Understand the traps and how to avoid them.
When asked to identify the five phonological parameters of a sign, the candidate lists handshape, location, movement, and orientation but omits nonmanual signals (or substitutes 'palm orientation' for 'orientation' inconsistently and drops facial expression), producing an incomplete parameter set.
Study guides often present the parameters as a memorized four-item list, and candidates rehearse them without checking whether the exam framework treats nonmanual markers as a core parameter rather than an add-on. The result is a rote list that breaks down when a question asks which parameter distinguishes two minimal pairs.
What to do instead
Build a five-slot checklist (handshape, location, movement, orientation, nonmanual signals) and practice applying it to minimal-pair sets such as MOTHER/FATHER (location) and APPLE/ONION (handshape or movement). For each pair, state in writing which single parameter changes, then verify against a linguistics reference rather than a memorized list.
The candidate analyzes ASL sentence structure by mapping it word-for-word onto English order, labeling a topicalized sentence as 'passive voice' or marking an ASL rhetorical question as an error because it looks like an English interrogative.
Candidates who learned ASL as a second language internalize English metalanguage (subject, passive, question mark) and apply it mechanically. They have not practiced identifying ASL-specific structures like topic-comment, rhetorical questions, and conditional clauses as distinct grammatical devices.
What to do instead
Practice glossing sentences in ASL order and labeling functions (topic, comment, rhetorical question, conditional) without translating to English first. Drill a fixed set of contrasts: information-seeking question vs. rhetorical question (nonmanual marker and answer expectation), and topic-comment vs. English subject-verb-object. Write the nonmanual marker above each gloss so the structure is visible.
On questions about ASL morphology, the candidate treats all sign modification as 'just emphasis' and fails to distinguish derivational processes (e.g., noun-verb pairs like SIT/CHAIR) from inflectional ones (e.g., plural incorporation, verb agreement, aspect marking).
Everyday ASL instruction emphasizes meaning and fluency, so candidates rarely receive explicit morphology training. They default to a semantic description ('it means the same thing but stronger') instead of naming the morphological process, which is what the item asks for.
What to do instead
Make a two-column chart of derivational vs. inflectional processes with three ASL examples each: noun-verb pairs and agentive -ER for derivation; plural incorporation, spatial verb agreement, and continuative/incessant aspect for inflection. For each example, write the base form, the modified form, and the rule that produced it.
The candidate answers a language-acquisition item by describing how hearing children acquire spoken English and assumes Deaf children of Deaf parents follow the same timetable, or claims ASL acquisition is 'delayed' for all Deaf children.
Candidates conflate modality with developmental sequence and have not studied the natural-sign-language acquisition literature showing that Deaf children with signing parents pass through babbling, one-sign, and multi-sign stages on a timetable comparable to spoken language. The error is a factual gap, not a reasoning error.
What to do instead
Memorize the acquisition milestones (manual babbling, first signs around the end of the first year, two-sign combinations, later complex morphology) and attach the key contrast to each: native signers vs. late learners. For any item mentioning age of exposure, first ask 'who are the parents?' before answering.
When a question involves a Deaf child's language development, the candidate recommends oral-only intervention or treats cochlear implantation as automatically resolving language delay, without addressing accessible language exposure and its timing.
Candidates draw on general special-education assumptions or personal opinion rather than the evidence base on language deprivation. They also confuse audiological access with linguistic access, which are different constructs the exam tests separately.
What to do instead
Prepare a short evidence summary: critical-period findings, language deprivation syndrome, and the distinction between auditory access and accessible visual language. For scenario items, identify the child's current accessible language first, then evaluate whether the recommendation provides full linguistic input during the critical period.
The candidate summarizes an ASL narrative or poem by its English translation and misses features that only exist in the signed original, such as handshape rhyme, spatial indexing of characters, or the use of a single classifier handshape across a sequence.
Candidates read English translations or captioned summaries and believe they have 'covered' the work. Literary analysis in ASL depends on visual-phonological patterning that disappears in translation, and candidates have not practiced watching and annotating source performances.
What to do instead
Watch at least three canonical ASL literary works in the original and annotate them in a structured log: handshape patterns, location shifts for character changes, rhythm and hold patterns, and repetition. Practice naming the device (handshape rhyme, ABC story convention, classifier predicate) rather than summarizing plot.
On Deaf culture and history items, the candidate recites a single famous event (e.g., the 1988 Deaf President Now protest) for every question and cannot place other milestones such as the Milan Congress, the founding of Gallaudet, or the emergence of Deaf theater and film in sequence or significance.
Review materials often highlight one dramatic event, and candidates build their entire historical frame around it. They lack a chronological spine, so questions about cause, consequence, or chronology have no scaffolding to attach to.
What to do instead
Build a dated timeline from the 18th century to the present with one sentence per entry on cause and consequence, and add a column for 'what changed for Deaf communities.' Test yourself by covering the dates and reconstructing order, then by explaining why each event mattered beyond its own moment.
The candidate treats ASL as a single uniform code and marks regional, generational, or ethnic variation as 'incorrect signing,' or answers variation items by asserting that Black ASL is simply 'slang.'
Candidates generalize from their own classroom variety and have not studied sociolinguistic variation in ASL, including the documented phonological and lexical features of Black ASL and the effect of segregation on its development. Prescriptive habits from language learning reinforce the error.
What to do instead
Study variation along three axes (region, generation, race/community) with two documented examples each, including Black ASL's distinctive features such as signing space and two-handed versus one-handed variants. Practice restating every variation item as 'which variety/community uses this form?' rather than 'which is right?'
The candidate plans an ASL lesson by listing vocabulary and then adding a communicative activity, without specifying how the target structure will be made comprehensible or how students will be assessed on it, so the lesson plan lacks alignment between objective, activity, and assessment.
Candidates without teaching experience model lessons on their own language classes, which emphasized vocabulary coverage. They have not practiced backward design, so the objective is written after the activities rather than driving them.
What to do instead
Practice backward design on three lesson topics: write the observable objective first (what students will do in ASL), then the assessment evidence, then the activity sequence. Include a comprehensible-input stage and a structured output stage, and check that every activity maps to a stated objective.
On assessment and professional-issues items, the candidate evaluates a signing sample by overall fluency impression or by counting errors in English translation, rather than applying a rubric to specific ASL features such as grammar, discourse cohesion, and register.
Candidates have experienced ASL grading as holistic and subjective, and they have not seen or used analytic rubrics. Without a rubric vocabulary, they cannot describe what a score represents, which is exactly what these items test.
What to do instead
Obtain or construct an analytic rubric with separate criteria (grammar, vocabulary, fluency, comprehension, cultural appropriateness) and score three recorded samples, writing one evidence sentence per criterion. Also review the interpreter/educator code-of-ethics concepts and the distinction between formative and summative assessment so professional-issue items are answered on principle, not impression.