Related Experiment Video
Updated: Jun 13, 2026
06:48
Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
Published on: June 25, 2019
Aralex: a lexical database for Modern Standard Arabic.
Sami Boudelaa1, William D Marslen-Wilson
1MRC Cognition and Brain Sciences Unit, Cambridge, England. sami.boudelaa@mrc-cbu.cam.ac.uk
Behavior Research Methods
|May 19, 2010
Summary
A new lexical database, Aralex, offers frequency data for Modern Standard Arabic roots, patterns, and n-grams. This resource aids cognitive processing studies, natural language processing research, and educational vocabulary development.
Area of Science:
- Computational Linguistics
- Psycholinguistics
- Lexicography
Background:
- Modern Standard Arabic (MSA) research requires robust lexical resources.
- Existing databases may not capture contemporary usage frequencies.
- Cognitive processing and NLP studies benefit from precise word frequency data.
Purpose of the Study:
- Introduce Aralex, a novel lexical database for MSA.
- Provide comprehensive frequency information on roots, word patterns, and n-grams.
- Facilitate research in psycholinguistics, NLP, and education.
Main Methods:
- Compiled a contemporary text corpus of 40 million words.
- Extracted token and type frequencies for roots and word patterns.
- Analyzed frequencies of orthographic and lexical n-grams (bigrams, trigrams).
Main Results:
- Aralex database established with detailed frequency metrics.
- Data includes root/pattern token and type frequencies.
- Includes frequency counts for orthographic and lexical bigrams and trigrams.
Conclusions:
- Aralex serves as a valuable tool for Arabic language research.
- Enables precise stimulus selection for cognitive processing experiments.
- Supports natural language processing applications and educational vocabulary initiatives.
Related Concept Videos
01:24Components of Language
Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs. “eh”). Phonemes combine to...
01:22Language Development
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
01:16Language
Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in...
Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in...
01:14Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1
Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo, or cyano...
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo, or cyano...
01:27Air-entraining Agents
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
01:11Aryldiazonium Salts to Azo Dyes: Diazo Coupling
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.