A focal stimulus (object, end state, outcome, event, experience, characteristic, possibility, etc.) may represent a presence, an occurrence, or something, or it may represent an absence, a nonoccurrence, or nothing. This presence-absence distinction has received extensive and explicit attention in cognitive psychology (it is the central figure), but it has received minimal and primarily implicit attention in motivation science (it is the ground, not the figure). Herein, we explicitly place the presence-absence distinction in the role of figure in a motivational account of behavior, and we do so in the context of the foundational approach-avoidance motivation distinction. We review pertinent literature in cognitive psychology and motivation science, and we provide a model integrating the approach-avoidance and the presence-absence distinctions, along with numerous examples, illustrations, and observations. We believe that attending to the presence-absence distinction in motivation science holds great promise for theory, research, and application, and we encourage researchers to attend to this distinction moving forward. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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BMC Plant Biol
January 2025
Biosystematics Group, Wageningen University and Research, Droevendaalsesteeg 1, Wageningen, 6708 PB, The Netherlands.
Background: HOPZ-ACTIVATED RESISTANCE 1 (ZAR1) is a nucleotide-binding leucine-rich repeat (NLR) protein functioning as a recognition hub to initiate effector-triggered immunity against bacterial pathogens. To initiate defense, ZAR1 associates with different HOPZ-ETI-DEFICIENT 1 (ZED1)-Related Kinases (ZRKs) to form resistosomes to indirectly perceive effector-induced perturbations. Few studies have focused on the phylogenomic characteristics of ZAR1 and ZRK immune gene families and their evolutionary relationships.
View Article and Find Full Text PDFSchistosomiasis, a neglected tropical disease, is transmitted by freshwater snails. Interruption of transmission will require novel vector-focused interventions. We performed a genome-wide association study of African snails, , exposed to in an endemic area of high transmission in Kenya.
View Article and Find Full Text PDFJ Int Soc Sports Nutr
December 2025
University "G. D'Annunzio" of Chieti-Pescara, Department of Medical, Oral and Biotechnological Sciences, Chieti, Italy.
Background: Athletes' oral health can impact overall well-being and sports performance. This study aimed to evaluate the interactions between eating habits and oral health of 120 young athletes as compared to 30 age-matched individuals not practicing sports based on a questionnaire and the analysis of saliva.
Methods: One hundred twenty subjects practicing various sports activities (test group) and 30 subjects not practicing sports (control group) were selected.
Mol Plant Pathol
December 2024
Department of Biology, University of Oxford, Oxford, UK.
Fungal plant pathogens cause major crop losses worldwide, with many featuring compartmentalised genomes that include both core and accessory regions, which are believed to drive adaptation. The highly host-specific fungus Colletotrichum lupini greatly impacts lupin (Lupinus spp.) cultivation.
View Article and Find Full Text PDFMicrobiol Spectr
December 2024
Joint Institute for Food Safety and Applied Nutrition and Center for Food Safety and Security Systems, University of Maryland, College Park, Maryland, USA.
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