As the primary users of smartphones, emerging adults represent a key population for such research. Using a randomised controlled trial, the investigators compared mindfulness-of-death meditation with traditional mindfulness meditation to evaluate the unique effects of the former on problematic smartphone use. The investigators also examined potential psychological pathways-namely increases in self-esteem and meaning in life, and reductions in perceived stress-through which the intervention may exert its benefits.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
259
The Mindfulness of Death (MoD) intervention is a 16-day online meditation program designed to cultivate awareness of death. The course consists of 16 daily sessions (approximately 20 minutes each), including brief psychoeducational content and guided meditation practice. The initial sessions focus on breathing-based mindfulness to establish attentional stability, followed by mindfulness of death practices that emphasize the inevitability and uncertainty of death while encouraging attention to life and the present moment. The intervention adopts a non-religious approach and does not require participants to hold any religious or spiritual beliefs.
The Mindful Breathing Practice (MBP) intervention is a 16-day online meditation program designed to cultivate present-moment awareness by intentionally anchoring attention on the natural rhythm of breathing. The course consists of 16 daily sessions (approximately 15 minutes each), including brief instructional guidance and guided mindful breathing exercises. Participants are guided to observe the bodily sensations of inhalation and exhalation (e.g., the airflow at the nostrils or the rise and fall of the abdomen) and, when attention wanders, to gently bring it back to the breath with a non-judgmental and accepting attitude. The intervention adopts a non-religious approach, involves no spiritual or religious content, and is suitable for the general population.
Beijing Normal University
Beijing, China
Smartphone Addiction Scale
Participants' problematic smartphone use was assessed using the 33-item Smartphone Addiction Scale (SAS) \[Kwon et al., 2013\]. Although the original scale employed a 6-point response format, the present study utilized a 5-point Likert scale ranging from 1 (almost never) to 5 (almost always; α = .88). The scale comprises six dimensions: daily disturbance, positive anticipation, withdrawal symptoms, online intimacy, excessive use, and tolerance. Higher total scores indicate greater severity of problematic smartphone use.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Perceived Stress Scale-10
Participants' perceived stress was assessed using the 10-item Perceived Stress Scale (PSS-10) \[Cohen et al., 1983; Chen et al., 2021\]. The validated Chinese version \[Chen, Tian, Zhang, et al., 2021\] was employed in the present study. Items were rated on a 5-point Likert scale ranging from 1 (never) to 5 (always; α = .78-.91). The scale consists of two dimensions: perceived helplessness and self-efficacy belief. Six items assessing self-efficacy belief were reverse-scored. Higher total scores reflect elevated levels of perceived stress.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Philadelphia Mindfulness Scale
Participants' mindfulness was assessed using the 10-item Philadelphia Mindfulness Scale (PHLMS) \[Cardaciotto et al., 2008; Zeng et al., 2015\]. The validated Chinese version \[Zeng, Li, Zhang, \& Liu, 2015\] was employed in the present study. Items were rated on a 5-point Likert scale ranging from 1 (never) to 5 (always; awareness subscale α = .82; acceptance/avoidance subscale α = .80). The scale comprises two dimensions: awareness and acceptance/avoidance. Five items assessing acceptance/avoidance were reverse-scored. Higher total scores indicate greater mindfulness.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Self-Control Scale for College Students
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Participants' self-control was assessed using the 19-item Self-Control Scale for College Students \[Tangney et al., 2004; Tan \& Guo, 2008\]. The validated Chinese version \[Tan \& Guo, 2008\] was employed in the present study. Items were rated on a 5-point Likert scale ranging from 1 (not at all) to 5 (very much; α = .85). The scale comprises five dimensions: impulse control, health habits, resisting temptation, focused work, and moderation in entertainment. Higher total scores reflect greater self-control.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Boredom Proneness Scale-Short Form
Participants' boredom proneness was assessed using the 12-item Short Form of the Boredom Proneness Scale (BPS-SF) \[Vodanovich et al., 2005\]. Items were rated on a 7-point Likert scale ranging from 1 (strongly disagree) to 7 (strongly agree; external stimulation deficiency α = .81; internal stimulation deficiency α = .78). The scale comprises two dimensions: external stimulation deficiency and internal stimulation deficiency. Six items assessing internal stimulation deficiency were reverse-scored. Higher total scores indicate greater boredom proneness.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Three-Dimensional Meaning in Life Scale
Participants' meaning in life was assessed using the 11-item Three-Dimensional Meaning in Life Scale (3DM) \[Martela \& Steger, 2016\]. Items were rated on a 7-point Likert scale ranging from 1 (not at all) to 7 (very much; purpose α = .90; coherence α = .84; significance α = .86). The scale comprises three dimensions: purpose, coherence, and significance. Higher total scores reflect greater meaning in life.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up
Zimbardo Time Perspective Inventory
Participants' time perspective was assessed using the 25-item Zimbardo Time Perspective Inventory (ZTPI) \[Zimbardo \& Boyd, 1999\]. Items were rated on a 5-point Likert scale ranging from 1 (very uncharacteristic) to 5 (very characteristic; past-positive α = .79; past-negative α = .82; present-hedonistic α = .84; present-fatalistic α = .74; future α = .84). The scale comprises five dimensions: past-positive, past-negative, present-hedonistic, present-fatalistic, and future. Higher subscale scores indicate stronger orientation toward that particular time perspective.
Time frame: Baseline, post-intervention (Day 16), and one-month follow-up