We estimate the causal effect of exposure to math during high school on university major choice and performance, using a unique administrative dataset of 1,396 twins extracted from the entire student population enrolled between 2011 and 2021 at an Italian university. We apply a Twin Fixed Effect...

This study aims to determine the most important component of economic freedom and to rank the performance of countries using multiple criteria decision-making tools within the context of fuzzy set theory. To do so, we utilize a combination of fuzzy entropy weighting and fuzzy technique for order...

We estimate the causal effect of exposure to math during high school on university major choice and performance, using a unique administrative dataset of 1,396 twins extracted from the entire student population enrolled between 2011 and 2021 at an Italian university. We apply a Twin Fixed Effect...

Teachers' stereotypical assessments widen the gender gap in earnings and formal sector employment after high school graduation, with lasting positive effects for men and shorter-term negative effects for women. Exposure to these assessments throughout high school disproportionately affects...

Financial literacy is an important prerequisite for making informed financial decisions, but it remains low, especially among women and older people. Internalized stereotypes can undermine confidence and subsequently affect behavior in financial matters, leading to suboptimal decisions. This...

At the start of the Coronavirus Disease (COVID-19) vaccination campaign in Mexico, the vaccine was the world's most essential and scarce asset. Managing its administration to optimize its use was, and still is, of paramount importance. However, when the first vaccine was developed at the end of...

"Out-of-field" teaching in mathematics refers to teachers who teach the subject without mathematics-specific qualifications to do so. Out-of-field teaching has the potential to affect teachers' classroom instruction practices with consequences for student learning. This report describes the...

To compare 'in-field' versus 'out-of-field' teachers of Years 7-10 mathematics in Australia on key demographic and instructional dimensions, we analysed nationally representative system data collected by the OECD Teaching and Learning International Survey (TALIS), one of the world's largest...

ZusammenfassungDer Beitrag untersucht 1) den Zusammenhang zwischen der sozioökonomischen und ethno-lingualen Schulklassenkomposition und den Kompetenzen in Mathematik und den Naturwissenschaften von zugewanderten Jugendlichen und 2), ob Unterschiede in der sozialen Zusammensetzung der...

This paper investigates whether citizenship of immigrant students in the host country influences their choice of majors, and whether these effects differ by gender. Using detailed students' data from an Italian university, combined with characteristics of the countries of origin, I examine the...

Numerous expansions of fuzzy sets have been proposed to manage uncertain information in real-world problems. Unlike fuzzy sets and intuitionistic fuzzy sets, picture fuzzy sets independently consider membership, non-membership, and indeterminacy. They have been extensively employed to delineate...

There is much public concern over the poor math performances of U.S. students compared to other developed countries. In this paper, we consider the role of instruction style in student performance on the math literacy portion of the OECD's PISA exam, specifically looking at the...

Q-Rung orthopair fuzzy set (Q-ROFSs) is a generation of quartic fuzzy sets (QFSs), Fermatean fuzzy sets (FFSs), Pythagorean fuzzy sets (PFSs), Intuitionistic fuzzy sets (IFSs), and fuzzy sets (FSs). Fuzzy similarity measures find wide-ranging applications in several fields, such as pattern...

This study proposes a new class of fuzzy sets called Quintic Fuzzy Set (QuFS), where the sum of the fifth power of the membership degree and non-membership degree is less than or equal to one. We introduce the complement operator and basic operations on QuFS and further develop various theorems...

A necessary condition for a dominance of prospect F over prospect G by all commonly employed investment criteria is E_F (x)≥E_G (x). Because of this requirement, optimal investment rules fail to distinguish between two alternative prospects where in practice one prospect is preferred over the...

Presentation of a mathematics of letters and a language of letters that will allow an artificial intelligence to learn endlessly and be able to think as we think. With the numbered letters, the information that an artificial intelligence obtains with its artificial senses will not lose its...

A novel factorization for the sum of two single-pair matrices is established as product of lower-triangular, tridiagonal, and upper-triangular matrices, leading to semi-closed-form formulas for tridiagonal matrix inversion. Subsequent factorizations are established, leading to semi-closed-form...

In this paper, some main eigenvalues and eigenvectors of the politics matrix are investigated. The number of upper-class families in a society is the number of eigenvalues which are very close to 1. An algorithm to identify all the upper-class families from the right and left eigenvectors of...

The purpose of this study is to produce valid mathematical modeling tasks using parking fees for learning mathematical modeling in SMK. This study used a research development approach by Akker, Gravemeijer, McKenney and Nieveen. This research consists of 3 stages, namely analysis, design and...

The standard economic model of occupational choice following a basic Roy model emphasizes individual selection and comparative advantage, but the sources of comparative advantage are not well understood. We employ a unique combination of Dutch survey and registry data that links math and...

This study presents an extensive analysis of the research landscape concerning the application of computational and mathematical techniques in cocoa farming from 2000 to 2020. The methodology comprises a two-stage process: a bibliometric analysis of 1,886 peer-reviewed documents and a...

In the pursuit of understanding collective intelligence, the Hong-Page Theorems have been presented as cornerstones of the interplay between diversity and ability. However, upon rigorous examination, there seem to be inherent flaws and misinterpretations within these theorems. Hélène...

This paper applies a multi-input production function to derive the simultaneous impact of internalizing some external economies or diseconomies. While it demonstrates the powerful impact of internalizing external economies, it shows that external diseconomies are absolutely unacceptable. When...

Externality means something from outside, so it requires a different mathematics from the standard theory of the firm. One alternative is offered by James E. Meade, but it contains, at least, three mistakes. Mathematics is supposed to be precise and its handling disciplinary, but Meade’s...

In the landmark article [MSTW17], Müller et. al. introduced the notion of fractional stochastic dominance (SD) to interpolate between first and second SD relations. In this article, we introduce a novel family of multi-fractional stochastic orders that generalizes fractional SD in a natural...

Much research shows that students take account of their perceived comparative advantage in mathematics relative to verbal skills when choosing college majors and career tracks. There is also evidence for an important role for comparative advantage in explaining the gender gap in college STEM...

This paper investigates the determinants of mathematics performance by gender, exploiting a multilevel random forest approach. OECD PISA 2018 data from 28 European countries are employed to explore the performance of male and female students as a function of students' family characteristics,...