More Like this

1. Towards solving psychology’s fundamental problem

   https://doi.org/10.1177/09593543241254798  

   Beaujean, A_Alexander (July 2024, Theory & Psychology)

   The problem driving this debate issue is old, going back to at least to the 17th century. Yet, psychologists are no closer to solving the problem now than they were centuries ago. In this article I argue that the reason for the lack of definitive solution is that disputants share assumptions that make the problem unsolvable. More specifically, the problem is based on the assumptions that (a) the knowledge field of psychology is coherent and (b) natural scientists employ a common inquiry approach. Both are troublesome. As such, instead of asking questions such as “Should psychologists follow the natural sciences?” it would be much more meaningful to ask questions such as “What does it look like for psychologists in this subfield to follow a scientific approach?” 

   more » « less
2. Proposing a neural framework for the evolution of elaborate courtship displays

   https://doi.org/10.7554/eLife.74860  

   Schwark, Ryan W; Fuxjager, Matthew J; Schmidt, Marc F (May 2022, eLife)

   In many vertebrates, courtship occurs through the performance of elaborate behavioral displays that are as spectacular as they are complex. The question of how sexual selection acts upon these animals’ neuromuscular systems to transform a repertoire of pre-existing movements into such remarkable (if not unusual) display routines has received relatively little research attention. This is a surprising gap in knowledge, given that unraveling this extraordinary process is central to understanding the evolution of behavioral diversity and its neural control. In many vertebrates, courtship displays often push the limits of neuromuscular performance, and often in a ritualized manner. These displays can range from songs that require rapid switching between two independently controlled ‘voice boxes’ to precisely choreographed acrobatics. Here, we propose a framework for thinking about how the brain might not only control these displays, but also shape their evolution. Our framework focuses specifically on a major midbrain area, which we view as a likely important node in the orchestration of the complex neural control of behavior used in the courtship process. This area is the periaqueductal grey (PAG), as studies suggest that it is both necessary and sufficient for the production of many instinctive survival behaviors, including courtship vocalizations. Thus, we speculate about why the PAG, as well as its key inputs, might serve as targets of sexual selection for display behavior. In doing so, we attempt to combine core ideas about the neural control of behavior with principles of display evolution. Our intent is to spur research in this area and bring together neurobiologists and behavioral ecologists to more fully understand the role that the brain might play in behavioral innovation and diversification. 

   more » « less
3. Emergence of relational reasoning

   https://doi.org/doi.org/10.1016/j.cobeha.2020.11.012  

   Holyoak, K. J.; Lu, H. (February 2021, Current opinion in behavioral sciences)

   null (Ed.)

   We review recent theoretical and empirical work on the emergence of relational reasoning, drawing connections among the fields of comparative psychology, developmental psychology, cognitive neuroscience, cognitive science, and machine learning. Relational learning appears to involve multiple systems: a suite of Early Systems that are available to human infants and are shared to some extent with nonhuman animals; and a Late System that emerges in humans only, at approximately age three years. The Late System supports reasoning with explicit role-governed relations, and is closely tied to the functions of a frontoparietal network in the human brain. Recent work in cognitive science and machine learning suggests that humans (and perhaps machines) may acquire abstract relations from nonrelational inputs by means of processes that enable re-representation. 

   more » « less
4. Psychological science in the Wake of COVID-19: Social, methodological, and meta-scientific considerations

   https://doi.org/10.31234/osf.io/6gjfm  

   Rosenfeld, D.L.; Balcetis, E.; Bastian, B.; Berkman, E.T.; Bosson, J.K.; Brannon, T.N.; Burrow, A.L.; Cameron, C.D.; Chen, S.; Cook, J.E.; et al (March 2022, Perspectives on psychological science)

   The COVID-19 pandemic has extensively changed the state of psychological science from what research questions psychologists can ask to which methodologies psychologists can use to investigate them. In this article, we offer a perspective on how to optimize new research in the pandemic’s wake. Because this pandemic is inherently a social phenomenon—an event that hinges on human-to-human contact—we focus on socially relevant subfields of psychology. We highlight specific psychological phenomena that have likely shifted as a result of the pandemic and discuss theoretical, methodological, and practical considerations of conducting research on these phenomena. After this discussion, we evaluate metascientific issues that have been amplified by the pandemic. We aim to demonstrate how theoretically grounded views on the COVID-19 pandemic can help make psychological science stronger—not weaker—in its wake. 

   more » « less
5. Transcriptomic analysis of mosaic brain differentiation underlying complex division of labor in a social insect

   https://doi.org/10.1002/cne.25469  

   Muratore, Isabella_Benter; Mullen, Sean_Patrick; Traniello, James_Francis_Anthony (March 2023, Journal of Comparative Neurology)

   Abstract Concerted developmental programming may constrain changes in component structures of the brain, thus limiting the ability of selection to form an adaptive mosaic of size‐variable brain compartments independent of total brain size or body size. Measuring patterns of gene expression underpinning brain scaling in conjunction with anatomical brain atlases can aid in identifying influences of concerted and/or mosaic evolution. Species exhibiting exceptional size and behavioral polyphenisms provide excellent systems to test predictions of brain evolution models by quantifying brain gene expression. We examined patterns of brain gene expression in a remarkably polymorphic and behaviorally complex social insect, the leafcutter antAtta cephalotes. The majority of significant differential gene expression observed among three morphologically, behaviorally, and neuroanatomically differentiated worker size groups was attributable to body size. However, we also found evidence of differential brain gene expression unexplained by worker morphological variation and transcriptomic analysis identified patterns not linearly correlated with worker size but sometimes mirroring neuropil scaling. Additionally, we identified enriched gene ontology terms associated with nucleic acid regulation, metabolism, neurotransmission, and sensory perception, further supporting a relationship between brain gene expression, brain mosaicism, and worker labor role. These findings demonstrate that differential brain gene expression among polymorphic workers underpins behavioral and neuroanatomical differentiation associated with complex agrarian division of labor inA. cephalotes. 

   more » « less