The Mapa ng Loob [ˈmapa naŋ lɔʔˈɔb], or Masaklaw na Panukat ng Loob [ˈmasak'law na pa'nukat naŋ lɔʔˈɔb] (English: Comprehensive Measure of Personality) is a 188-item Filipino self-report personality inventory. It has a five-factor structure made up of 20 scales, which results in 4 scales for each of the five factors or domains (Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness). It has two additional scales which belong to two domains, and one social desirability scale. As with similar instruments such as the NEO-PI and the HEXACO, an individual can be scored on each of the 5 larger domains, but also on each of the more specific trait scales. The Mapa was developed by academics and students working at the University of the Philippines Diliman, for use with young adult and adult Filipino respondents. It is currently available for purchase in pen-and-paper and online formats. Previous work in the Philippines have already established that Five Factor or Big 5 traits can be recovered from indigenous personality inventories. However, until the Mapa, there had been no serious attempt at constructing a Filipino instrument with a clear five factor structure. Plans for what eventually became the Mapa originally intended it to be an update of the existing personality inventory Panukat ng Pagkataong Pilipino (PPP). Eventually it was decided instead that it will become a separate instrument. The lead author, Professor Gregorio E. H. del Pilar of the University of the Philippines Diliman, has also cited the need for up-to-date and affordable psychological instruments in the Philippines as one of the motivations behind the development of the Mapa. Initial work on item writing was undertaken at the University of the Philippines Diliman, during the second semester of 2010 (equivalent to the fall semester) by a team of 6 graduate students and by groups taking a course on psychological measurement, all of whom were supervised by del Pilar. This produced a pool of items which were then examined and rated for prototypicality.