Dominance and noncommutativity effects in concept conjunctions: extensional or intensional basis?

G Storms1, P de Boeck, I Van Mechelen

  • 1Katholieke Universiteit, Leuven, Belgium.

Memory & Cognition
|November 1, 1993
PubMed

Related Concept Videos

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)

α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are formed faster owing to...
Constraints and Statical Determinacy01:26

Constraints and Statical Determinacy

In structural engineering, the equilibrium of a system is not only determined by its equations of equilibrium but also with the help of constraints. Constraints refer to restrictions on the motion of a system. The proper combinations of constraints can minimize the total number of constraints needed to maintain a system in mechanical equilibrium. When this happens, the system is said to be statically determinate. For such systems, the unknown reaction supports can be estimated using equilibrium...
Complementation Tests00:49

Complementation Tests

A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Commutative Property of Real Numbers01:29

Commutative Property of Real Numbers

The commutative property is a fundamental property of numbers that applies to addition and multiplication. It states that changing the order of the numbers being added or multiplied does not change the result. For any numbers a and b, the commutative property of addition is expressed as a + b = b + a, while the commutative property of multiplication is a × b = b × a.For example, 8 + 12 = 12 + 8 = 20, and 4 × 7 = 7 × 4 = 28. So, the order of addends or factors can be changed without altering the...
Associative Property Of Real Numbers01:25

Associative Property Of Real Numbers

The associative property is a fundamental property of real-number addition and multiplication. It states that when three or more numbers are combined using only addition or only multiplication, the placement of parentheses can be changed without changing the resulting value. This property allows expressions to be regrouped strategically, often making numerical and algebraic calculations simpler.For any real numbers a, b, and c, the associative property of addition is expressed as (a + b) + c =...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.