Evaluation in Speech-Language Pathology

Components of the Speech-Language Pathology Evaluation

  • The evaluation process in Speech-Language Pathology (SLP) is a methodical progression of assessments designed to diagnose and provide treatment pathways for communication and swallowing disorders.

  • The core components of a comprehensive evaluation include:

    • Case History collection.

    • Oral Mechanism Evaluation (also known as an Oral Peripheral Exam).

    • Hearing Screening.

    • Informal Evaluation, including connected speech samples, observation, and clinical checklists.

    • Formal Evaluation, utilizing standardized and norm-referenced assessments.

    • Final Recommendations and goal setting.

Case History: Documentation and Oral Interviewing

  • The case history provides a foundational context for the entire assessment process through written documentation and verbal clarification.

  • Written Case History forms focus on:

    • Client and family perceptions of the presenting communication concern.

    • Onset, symptoms, and the duration of the difficulties.

    • Medical history, including diagnoses, surgeries, and hospitalizations.

    • Developmental history, tracking physical and linguistic milestones.

    • Family and social history to identify hereditary factors or lifestyle impacts.

    • Academic history, including school performance and past services.

    • External records provided by physicians, teachers, or previous therapists.

  • The Oral Interview is conducted to:

    • Clarify ambiguities in the written documentation.

    • Discuss specific concerns directly with the client or family members.

    • Describe the structure of the evaluation process to the client.

    • Provide a clear estimated timeframe for the completion of the assessment and reporting.

Detailed Adult Case History Components

  • Adult evaluations often use standardized intake forms (such as those from SLEA - Speech, Language and Educational Associates) to capture historical and functional data.

  • Background Information: Includes standard demographics (name, age, email, physician) along with the reason for referral. Patients are asked to identify their current concerns, perceived causes of difficulties, and whether the problem has worsened or improved.

  • Medical Status: Requires a list of current medical diagnoses, surgeries, chronic illnesses, medications, and known allergies (medications, food, latex, seasonal). It also captures the status of previous hearing and vision evaluations.

  • Social and Occupational History: Tracks marital status, spouse information, current/past occupation, the highest degree earned, and current living setting (e.g., two-story house vs. apartment).

  • Functional Activities of Daily Living (ADL): Identifies if assistance is needed for:

    • Eating, dressing, cooking, housekeeping, and personal hygiene (showering).

    • Telling time, money management, grocery shopping, and transportation/driving.

    • Keeping track of appointments and making phone calls.

    • Fine motor skills required for manipulating clothing fasteners, utensils, or keyboarding.

  • Linguistic and Cognitive Status: Documents if the client uses English as a second language, if an accent affects communication, and if the client suffers from expressive/receptive language difficulties or short/long-term memory deficits.

  • Swallowing and Health: Notes if the patient is on a modified diet, avoids certain textures, or uses dentures. A checklist of swallowing markers includes chewing food, managing liquids, coughing, choking, drooling, eye-watering during intake, and the ability to clear food from the mouth.

  • Personal Learning Styles: Identifies the patient's best way to learn new information, categorized as Verbal instruction, Hands-on learning, Written instruction, or Demonstration.

Detailed Pediatric Case History Components

  • Pediatric intake forms (such as those from Super Duper Publications) focus on the child's developmental trajectory from birth.

  • Birth and Pregnancy History: Records the pregnancy duration (in months), maternal illness, birth complications, and the reason for any extended hospital stays following delivery.

  • Developmental Milestones: Documents the specific age at which the child achieved certain milestones: sat alone, babbled, said first words, walked, grasped a crayon/pencil, used two-word combinations, spoke in short sentences, and was toilet trained.

  • Speech and Language Status: Captures current communication methods (body language, sounds, single words, 22 to 44 word sentences, or long sentences) and the child's awareness of their difficulties.

  • Receptive and Behavioral Characteristics: Analyzes if the child understands parents, follows simple directions, and answers yes/no or W-questions. Behavioral traits assessed include impulsivity, stubborness, eye contact, aggressiveness, withdrawal, and the ability to play alone.

  • Medical and Education History: Lists previous evaluations (ST, PT, OT, vision, counseling) and medical conditions such as ear infections, the presence of ear tubes, high fevers, or thumb-sucking habits. School history includes grade level, teacher, and specific subject areas of difficulty.

Oral Mechanism Examination (Oral Peripheral Exam)

  • The primary aim of this exam is to establish the integrity of the physical structure and functional logic of the articulators.

  • Clinical Assessment Focus: Clinicians evaluate structures for symmetry, muscle strength, and range of motion (ROM). These findings may indicate a need for referral to other specialists (e.g., ENT, Physician).

  • Evaluated Components:

    • Face and Lips: Clinicians observe the face at rest and during tasks like smiling and puffing cheeks to detect drooping, spasms, or mouth breathing. Lip strength is tested against resistance, and symmetry is checked during puckering.

    • Jaw and Teeth: Evaluates ROM during mouth opening/closing and checks for popping or grinding in the Temporomandibular Joint (TMJ). Dentition assessment includes hygiene and molar/incisor relationships:

      • Molar Occlusion: Class I (Neutroclusion), Class II (Distoclusion), and Class III (Mesioclusion).

      • Incisor Occlusion: Overbite, underbite, and crossbite.

    • Tongue: Assessment of color, size, and the frenum. Clinicians observe rapid side-to-side movements, protrusion, retraction, and elevation/depression, checking for deviation, fasciculations, or groping.

    • Palate and Pharynx: Inspects the hard and soft palates for clefting, fistulas, arch height, and symmetry. Evaluation of the pharynx includes tonsil status and the status of the uvula and gag reflex (normal, absent, hyperactive, or hypoactive).

Hearing Screening Protocols

  • Screening is a brief procedure to establish whether a formal referral to an audiologist is necessary.

  • Otoscopy: The visual inspection of the outer and middle ear using an otoscope. In SLP practice, this is a nondiagnostic procedure to identify obstructions or signs of pathology. It is within the scope of practice for both SLPs and audiologists.

  • Pure Tone Screening Procedure:

    • A stimulus tone is presented at 40 dB40\,dB initially to "train" the client on the task.

    • The actual screening is conducted at 20 dB20\,dB at frequencies of 1000 Hz1000\,Hz, 2000 Hz2000\,Hz, and 4000 Hz4000\,Hz in each ear.

    • If the environment is sufficiently quiet, 500 Hz500\,Hz may be included.

    • The examiner can attempt frequencies up to 33 times.

    • Failure to respond to even one frequency in either ear constitutes a failed screening and indicates a need for referral.

Informal Evaluation: Nature and Tools

  • Informal methods provide a realistic picture of communication compared to standardized testing.

  • Connected Speech Samples: Elicited through pictures or spontaneous conversation while avoiding "closed-ended" questions. Analysts look for fluency, speech sound production (articulation), and specific language features.

  • Clinical Observation: Useful for naturalistic skills, such as observing child play, parent-child interactions, or social conversation with partners.

  • Clinical Checklists: Provide information regarding family/client perspectives.

    • Voice Handicap Index (VHI): Used to assess the impact of voice issues.

      • 0−300-30: Mild; minimal handicap.

      • 31−6031-60: Moderate; associated with nodules, polyps, or cysts.

      • 60−12060-120: Severe; associated with vocal fold paralysis or scarring.

    • Developmental Checklists: Examples include tracking skills like babbling /b/, /p/, /m/ sounds at 0−60-6 months or responding to own name at 7−127-12 months.

    • School-Aged Assessment Checklist: Helps identify primary weaknesses in receptive language, memory, attention, sequencing, and expressive language.

Formal Evaluation and Professional Recommendations

  • Standardized Assessments:

    • Norm-referenced assessments: Compare client performance to peers to produce a standard score; often required for insurance or school service eligibility.

    • Criterion-referenced assessments: Compare client performance against a specific standard or their own past performance.

    • Common tests include the PLS-5 (Preschool Language Scales), Goldman-Fristoe (GFTA for articulation), SSI-4 (Stuttering Severity Instrument), and REEL-4 (Receptive-Expressive Emergent Language Test).

  • The Final Report: Clinicians must score assessments, analyze speech samples, and integrate all data into a report containing:

    • Background and referral information.

    • Specific assessment results.

    • A clinical diagnosis.

    • Recommendations for treatment and specific clinical goals.