Twenty participants will be allocated to this arm if they demonstrate mild impairments in cognition based on a cognitive screening phase. Participants enrolled in this arm will be arranged in groups of 5. They will attend a paperwork visit and two video-viewing sessions (order is randomized) held approximately one week apart: (1) brief immersive nature-based video experience + group discussion and (2) comparison condition that includes presentation of a relatively "neutral," un-arousing documentary + group discussion. Each video lasts approximately 15 minutes. Using a semi-structured group discussion guide, participants will be prompted to talk about what they saw in the video and relate video content to their own lives and experiences.

Participants are allocated to this arm if they demonstrate healthy cognition based on a cognitive screening phase. Participants enrolled in this arm will be arranged in groups of 5. They will attend a paperwork visit and two video-viewing sessions (order is randomized) held approximately one week apart: (1) brief immersive nature-based video experience + group discussion and (2) comparison condition that includes presentation of a relatively "neutral," un-arousing documentary + group discussion. Each video lasts approximately 15 minutes. Using a semi-structured group discussion guide, participants will be prompted to talk about what they saw in the video and relate video content to their own lives and experiences.

An approximately 15-minute digital nature experience using work by filmmaker Louie Schwartzberg-Visual Healing by Moving Art. Time-lapse, high-speed, and macro cinematography are incorporated within each video. Audiovisual content include vivid imagery of a variety of ecosystems and climates accompanied by calming instrumental music.

Both the MCI/Mild dementia arm and the healthy older adult arm will experience this intervention.

The primary outcome of this study is to determine feasibility of study procedures. Retention is one component of feasibility. Retention will be measured as the % completing both video-based visits. Data will be recorded in a testing log.

The primary outcome of this study is to determine feasibility of study procedures. Recruitment rate is one component of feasibility. Recruitment rate will be defined as the % (of number approached) recruited over the duration of the recruitment period. We will also note % recruited from various sources. Data will be recorded in a recruitment log.

The primary outcome of this study is to determine feasibility of study procedures. Implementation barriers is one component of feasibility. Implementation barriers will be defined as the perceived challenges to assessment and intervention delivery on the part of the investigative team. Data sources will include team meeting discussions and study logs made by investigators during implementation.

The primary outcome of this study is to determine feasibility of study procedures. Intervention fidelity is one component of feasibility. Intervention fidelity will be subjectively determined by adherence to group discussion guides that are paired with the video-based intervention component. Data sources will include video recordings of the group discussion and investigator study notes.

Participants' acute affective state will be assessed using the Multidimensional Mood Questionnaire (MDMQ) - English translation (Steyer, Schwenkmezger, Notz, & Eid, 1994). This 24-item questionnaire addresses degrees of unpleasantness, sleepiness, and restlessness. Items are rated on a 5-point Likert scale ranging from "not at all" to "very much." Subscale items are summed, with higher scores indicated greater well-being.