Objective: Although research supports an association between increased alternative reinforcement and decreased substance use, the impact of substance use on changes in reinforcement during posttreatment recovery remains untested. This study tested the effect of abstinence duration and substance use frequency on the trajectories of four reinforcement mechanisms, behavioral activation, reward probability, reward barriers, and valued living, from pre- to 12-month posttreatment.
Method: Adults in intensive outpatient substance use disorder treatment ( = 206) completed self-report measures of the four reinforcement constructs and substance use over six timepoints from pre- to 12-month posttreatment.
This study investigated the role of temperament in oral language development in over 200 Mandarin and Cantonese speakers in the pre-birth longitudinal cohort study. Mothers assessed infant temperament at nine months using a five-factor Infant Behaviour Questionnaire-Revised Very Short Form. They also reported on children's vocabulary and word combinations at age two using adapted MacArthur-Bates Communicative Development Inventory short forms.
View Article and Find Full Text PDFNucleosides Nucleotides Nucleic Acids
November 2024
The potential of neurotransmitters and neural hormones as possible G-quadruplex DNA binders was analyzed using fluorescence spectroscopy, surface-enhanced Raman spectroscopy (SERS), DNA melting analysis, and molecular docking. G-quadruplex sequences, (GGC) and GC, with roles in Fragile X syndrome and amyotrophic lateral sclerosis (ALS), respectively, were selected, and their interactions with melatonin, serotonin, and gamma-aminobutyric acid (GABA), were studied. Both melatonin and serotonin demonstrated strong interactions with the DNA sequences with hydrogen bonding being the primary mode of interaction, with some non-intercalative interactions involving the π systems.
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