Browsing by Subject "Feigning and malingering"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Publication
    Open Access
    Classification accuracy and resistance to coaching of the Spanish version of the Inventory of Problems -29 and the Inventory of Problems - Memory: a simulation study with mTBI patients
    (Taylor and Francis Group, 2023-08-24) Pina, David; Puente López, Esteban; Rambaud Quiñones, Paula; Ruiz Hernández, José Antonio; Nieto Cañaveras, María Dolores; Shura, Robert D.; Alcazar Crevillén, Andrés; Martinez Jarreta, Begoña; Psiquiatría y Psicología Social
    Objective: The present study aims to evaluate the classification accuracy and resistance to coaching of the Inventory of Problems-29 (IOP-29) and the IOP-Memory (IOP-M) with a Spanish sample of patients diagnosed with mild traumatic brain injury (mTBI) and healthy participants instructed to feign. Method: Using a simulation design, 37 outpatients with mTBI (clinical control group) and 213 non-clinical instructed feigners under several coaching conditions completed the Spanish versions of the IOP-29, IOP-M, Structured Inventory of Malingered Symptomatology, and Rivermead Post Concussion Symptoms Questionnaire. Results: The IOP-29 discriminated well between clinical patients and instructed feigners, with an excellent classification accuracy for the recommended cutoff score (FDS ≥ .50; sensitivity = 87.10% for coached group and 89.09% for uncoached; specificity = 95.12%). The IOP-M also showed an excellent classification accuracy (cutoff ≤ 29; sensitivity = 87.27% for coached group and 93.55% for uncoached; specificity = 97.56%). Both instruments proved to be resistant to symptom information coaching and performance warnings. Conclusions: The results confirm that both of the IOP measures offer a similarly valid but different perspective compared to SIMS when assessing the credibility of symptoms of mTBI. The encouraging findings indicate that both tests are a valuable addition to the symptom validity practices of forensic professionals. Additional research in multiple contexts and with diverse conditions is warranted.
  • Thumbnail Image
    Publication
    Open Access
    The Impact of different forms of coaching on the Structured Inventory of Malingered Symtomatology (SIMS)
    (Colegio Oficial de Psicólogos del Principado de Asturias, 2022-06-14) Pina, David; Puente López, Esteban; Shura, Robert; Boskovic, Irena; Martínez Jarreta, Begoña; Merten, Thomas; Psiquiatría y Psicología Social
    Background: Psychometric symptom validity instruments (SVTs) can be vulnerable to coaching, which can negatively affect their performance. Our aim was to assess the impact that different types of coaching may have on the sensitivity of the Structured Inventory of Malingered Symptomatology (SIMS). Methods: A simulation design was used with 232 non-clinical adults divided into five experimental simulation conditions and 58 patients with anxious-depressive symptomatology derived from a traffic accident. All simulators received a basic scenario and, in addition, the second group was instructed on the symptomatology, the third was warned about the risk of exaggerating the presentation, the fourth received a combination of the two previous groups and the fifth received specific training on SVTs. Results: The discriminative ability of the SIMS was higher in the basic and symptom information groups, and it decreased significantly in the specific training group on SVTs. Conclusions: SIMS seems not to be severely impacted by a variety of symptom coaching styles, although test coaching diminished its performance. ------------