Search results for " Discrimination"

Color-discrimination threshold determination using pseudoisochromatic test plates

2014

We produced a set of pseudoisochromatic plates for determining individual color-difference thresholds to assess test performance and test properties, and analyzed the results. We report a high test validity and classification ability for the deficiency type and severity level [comparable to that of the fourth edition of the Hardy–Rand–Rittler (HRR) test]. We discuss changes of the acceptable chromatic shifts from the protan and deutan confusion lines along the CIE xy diagram, and the high correlation of individual color-difference thresholds and the red–green discrimination index. Color vision was tested using an Oculus HMC anomaloscope, a Farnsworth D15, and an HRR test on 273 schoolchildr…

Estimating sexual knowledge of people with mild intellectual disability through a valid and reliable assessment scale: The ISK-ID

2021

Background Despite the relevance of assessing sexual knowledge in people with Intellectual Disability, there is a lack of appropriate assessment tools to measure this domain. The current study tests the psychometric properties of the new ‘Inventory of Sexual Knowledge of people with Intellectual Disability’ (ISK-ID). Method 345 individuals with mild intellectual disability completed the ISK-ID before and after the implementation of a sexual education program. Psychometric properties of the ISK-ID were analysed according to Multidimensional Item Response Theory (MIRT). Results Its underlying factorial structure, along with parameters derived from the MIRT (item discrimination, difficulty, an…

aporie e distorsioni del femminismo radicale

2016

In this article, I will show that there are some fa llacies in the radical feminist thought, for exampl e in MacKinnon, Berg, Russel, Andrea Dworkin. I will foc us on different themes: violence against women, dif fusion of a patriarchal conception in the mass culture, po rnography, and the concept of free choice.

Configural learning in rabbit nictitating membrane conditioning : acquisition of biconditional discrimination

2004

Spatial cues are relevant for learned preference/aversion shifts due to amino-acid deficiencies.

1998

Rats are able to choose appropriately between two versions of a novel diet, when one is amino-acid devoid and the other corrected. Recognition of the deficiency has been reported to occur within hours and to initiate a strong conditioned aversion. For that purpose the rat can use either oro-sensory cues or another alternative as the conditioned stimulus (CS) with which to associate the unconditioned stimuli (US) of either the adequate diet or the devoid diet. The present investigation was designed to determine whether rats have the ability to use place as a cue in amino-acid preference/aversion. In order to avoid interfering with any other than spatial sensory discrimination between the dev…

Pricing to market behaviour in European car markets

2003

Abstract This paper investigates PTM behaviour in European car markets for a period of great interest (1993–98), taking into account the role of invoicing currency. The results indicate that local currency price stability is a strong and pervasive phenomenon across products independently of the invoicing currency. The paper offers robustness checks, tests and arguments that justify the interpretation of this finding, at least in part, as evidence of PTM. It implies the existence of market segmentation and price discrimination, despite the completion of the single market programme on 1 January 1993.

Reduction of red-green discrimination by dopamine D1 receptor antagonists and retinal dopamine depletion

1996

AbstractReduction of wavelength discrimination ability in the 560–640 nm range, but not in the 404–540 nm range, has been demonstrated in goldfish after intravitreal injection of D1-dopamine receptor antagonists. Intravitreal injection of the dopaminergic neurotoxin 6-OH-dopamine severely reduced wavelength discrimination ability in the 540–661 nm range within 3 days. Discrimination ability could be reconstituted by the Dl-agonist SKF 38393. Animals recovered from injection of 6-OH-dopamine within 14–16 days. No change of wavelength discrimination was induced by 6-OH-dopamine in the 461–540 nm range. We conclude that under photopic conditions dopamine modulates retinal mechanisms involved i…

Functional relevance of cross-modal plasticity in blind humans

1997

Functional imaging studies of people who were blind from an early age have revealed that their primary visual cortex can be activated by Braille reading and other tactile discrimination tasks1. Other studies have also shown that visual cortical areas can be activated by somatosensory input in blind subjects but not those with sight2,3,4,5,6,7. The significance of this cross-modal plasticity is unclear, however, as it is not known whether the visual cortex can process somatosensory information in a functionally relevant way. To address this issue, we used transcranial magnetic stimulation to disrupt the function of different cortical areas in people who were blind from an early age as they i…

Adaptación de tres variables contextuales en estudiantes universitarios argentinos

2017

Una de las dificultades que han presentado los estudios destinados a identificar las causas de deserción universitaria es la falta de consideración de variables sociales/contextuales que, según se ha demostrado en la literatura, se relacionan con el proceso de progresión de la carrera. Para la evaluación de dichas variables, el primer paso consiste en la adaptación de pruebas que permitan su medición. Por lo cual, el objetivo del presente trabajo consistió en la adaptación de las escalas de Apertura a la Diversidad, Percepción de Prejuicios y Discriminación y Experiencias Académicas. En este estudio participaron 1295 estudiantes que se encontraban cursando diferentes carreras en la Universi…

Essays on the Performance, Subsidization and Internationalization of Social Enterprises

2020

Social enterprises are hybrid organizations that tackle societal challenges by using conventional business models. Being hybrid organizations means that social enterprises pursue dual objectives: social (developmental) and financial. By taking performance, subsidization and internationalization perspectives, this thesis contributes to understanding the hybridity of social enterprises and how this hybridity drives their general operations and key decisions such as foreign market selection and targeting strategy.