Search results for "Systematics"
showing 10 items of 6702 documents
Nutrient versus pollination limitation in Platanthera bifolia and Dactylorhiza incarnata (Orchidaceae)
2000
Availability of resources and pollination services have been demonstrated to have impact on reproductive success in some orchid species, but to our knowledge no studies have examined the effects of nutrient application and pollination limitation in the same experiment. In this study, factors limiting reproductive success were studied with two terrestrial orchid species in Central Finland during 1996 and 1997. In a field experiment using a factorial design, plants of nectar-producing Platanthera bifolia and nectarless Dactylorhiza incarnata were treated with nutrient application and hand-pollination. Inflorescence size was considered as an indicator of attractiveness to pollinators as well a…
The role of psychological inflexibility in adolescent satisfaction with the educational track and school dropout intentions
2022
This study aimed to obtain novel understanding of the associations between psychological inflexibility and adolescents' engagement with upper secondary studies. The participants were 885 Finnish adolescents (mean age 15.74 at the outset) whose psychological inflexibility was measured with the short form of the Acceptance and Fusion Questionnaire for Youth (AFQ-Y8) in the fall of the final (ninth) grade of basic education. School engagement was measured as satisfaction with the educational track and as school dropout intentions, and they were measured twice in the first study year after the transition to upper secondary education. The results showed that high psychological inflexibility in t…
Can peer-tutored psychological flexibility training facilitate physical activity among adults with overweight?
2021
Objective An increase in psychological flexibility has been found to be associated with health behavior changes. Peer-led interventions have been advantageous in improving physical activity among individuals at health risk. This study aimed to discover whether an ACT-based peer-tutored online intervention can increase self-reported physical activity participation and psychological flexibility among adults with overweight. Design The study was a non-randomized longitudinal intervention study. The intervention participants (N = 177) were primary health care clients with overweight. They participated in a 24-month program provided by health services, including three online modules of ACT of si…
Virtual reality acceptance and commitment therapy intervention for social and public speaking anxiety : A randomized controlled trial
2023
Virtual reality (VR) offers new and flexible ways to provide psychological interventions. The aim of this study was to develop and investigate the effectiveness of a VR intervention based on acceptance and commitment therapy (ACT) for social and public speaking anxiety. ACT is a process-based approach that aims to (a) increase individuals’ abilities to handle difficult emotional and cognitive experiences and (b) develop the motivation required for change to occur. In this study, a sample of university students with social interaction or communication anxiety (N = 76; age M = 24.95, SD = 6.50, 69.7% females) was blindly randomized into a total of 2 h of VR ACT training (VRACT; n = 37) or a w…
In the shadow of COVID-19: A randomized controlled online ACT trial promoting adolescent psychological flexibility and self-compassion.
2023
Background Although some adolescents managed to cope well with the challenges brought on by the COVID-19 pandemic, the well-being of many was adversely affected due to school closures, distance education, restrictions on gathering with friends, and limited access to mental health services. Many adolescents reported increased anxiety and depression as well as decreased psychological wellbeing due to the pandemic. Consequently, there is a need for psychological support that exceeds the strained resources available to schools to support young people during times of crisis and societal pressure. Objective The present study aimed to explore the effects of an online-delivered ACT intervention to …
Magis – A magical adventure: Using a mobile game to deliver an ACT intervention for elementary schoolchildren in classroom settings
2022
Studies of the effects of the COVID-19 pandemic have shown that this health emergency has affected especially young people. Supporting the well-being of children is thus particularly urgent. However, the high prevalence of ill-being among children requires novel approaches to providing help. Health care resources are limited, and many children did not receive support even before the pandemic. The current study presents a novel approach to delivering brief interventions for school-aged children. A mobile game based on acceptance and commitment therapy was used to increase psychological flexibility and well-being among 10 to 12-year-old schoolchildren. A sample of 106 students played the game…
A guided online ACT intervention may increase psychological well-being and support school engagement in adolescents
2023
Objective The aim of the present study was to investigate the extent to which initial levels and changes in ninth-grade adolescents' (n = 243) psychological well-being were associated with their school engagement after the transition to upper secondary education. In addition, we investigated whether a brief guided online acceptance and commitment therapy (ACT) intervention program delivered during ninth grade was associated with adolescents’ subsequent school engagement through changes in their psychological well-being. Method Latent growth modeling (LGM) was used to examine the levels of and changes in well-being during ninth grade. Next, school engagement (measured by school satisfaction …
Effectiveness of a web-based Acceptance and Commitment Therapy intervention for wellbeing of parents whose children have chronic conditions: A random…
2019
Effectiveness of a web-based acceptance and commitment therapy intervention for wellbeing of parents whose children have chronic conditions : A randomized controlled trial
Two new species of oribatid mites of Lasiobelba (Acari, Oribatida, Oppiidae) from Nepal, including a key to all species of the genus
2014
Two new species of oribatid mites of the genus Lasiobelba (Oribatida, Oppiidae), Lasiobelba (Lasiobelba) daamsae sp. n. and Lasiobelba (Antennoppia) nepalica sp. n., are described from eastern Nepal. Lasiobelba (L.) daamsae sp. n. is most similar to L. (L.) remota Aoki, 1959 and L. (L.) gibbosa (Mahunka, 1985), however, it differs from both by the anterior part of pedotecta I specifically curved, rostrum pointed and exobothridial setae not shorter than bothridial setae. Lasiobelba (Antennoppia) nepalica sp. n. is most similar to L. (A.) granulata (Mahunka, 1986), however, it differs from the latter by the larger body size, exobothridial setae longer than rostral setae and bothridial setae n…
New species of oribatid mites of the genera Lepidozetes and Scutozetes (Acari, Oribatida, Tegoribatidae) from Nepal
2013
Two new species of oribatid mites, Lepidozetes acutirostrum sp. n. and Scutozetes clavatosensillus sp. n., are described from Nepal. The genera Lepidozetes and Scutozetes are recorded for the first time for the Oriental region. The identification keys to the known species of these genera are provided.