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Related Concept Videos

What is a Species?01:17

What is a Species?

Overview
Frequency-dependent Selection01:21

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
Genetics of Speciation02:16

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
Testing a Claim about Mean: Unknown Population SD01:21

Testing a Claim about Mean: Unknown Population SD

A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here.
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used; instead...

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Related Experiment Video

Updated: May 19, 2026

Radio Frequency Identification and Motion-sensitive Video Efficiently Automate Recording of Unrewarded Choice Behavior by Bumblebees
09:09

Radio Frequency Identification and Motion-sensitive Video Efficiently Automate Recording of Unrewarded Choice Behavior by Bumblebees

Published on: November 15, 2014

Same/different discrimination by bumblebee colonies.

Michael F Brown1, Justin M Sayde

  • 1Department of Psychology, Villanova University, Villanova, PA 19085, USA. michael.brown@villanova.edu

Animal Cognition
|September 5, 2012
PubMed
Summary

Bumblebees demonstrate an identity concept, successfully distinguishing between "same" and "different" stimuli. This cognitive ability was observed even when visual cues changed during the experiment.

Area of Science:

  • Animal cognition
  • Insect behavior
  • Comparative psychology

Background:

  • Understanding cognitive abilities in non-human animals is crucial for comparative psychology.
  • Discrimination procedures are key to assessing abstract concept formation in insects.
  • Previous research has explored basic learning in bumblebees, but complex concept understanding remains less understood.

Purpose of the Study:

  • To investigate whether bumblebees possess an abstract identity concept (same/different).
  • To determine if bumblebees can generalize this concept across different sensory modalities (color and line gratings).

Main Methods:

  • Bumblebees were trained in a spatial choice task where reinforcement depended on stimulus identity (identical vs. different).
  • A transfer test was conducted using novel stimuli (line gratings) after training with color stimuli, and vice-versa.

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Last Updated: May 19, 2026

Radio Frequency Identification and Motion-sensitive Video Efficiently Automate Recording of Unrewarded Choice Behavior by Bumblebees
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  • Performance was measured by the proportion of correct choices in relation to identical and different stimuli.

    • Main Results:

    • Bumblebees consistently made more correct than incorrect choices for both identical and different stimuli during the transfer phase.
    • This pattern held true regardless of whether bees were initially trained with color or line grating stimuli.
    • The results indicate successful generalization of the same/different concept across visual domains.

    Conclusions:

    • Bumblebees exhibit a sophisticated cognitive ability, demonstrating an abstract identity concept.
    • This finding contributes to the understanding of cognitive evolution and the complexity of insect minds.
    • The results suggest that abstract concept formation may be more widespread in the animal kingdom than previously thought.